United States Department of the Navy
United StaActive Patents
0
Total Holdings
265
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US5417597A | Vessel with machinery modules outside watertight hull | Expired / Lapsed | 1994-04-28 | 1995-05-23 | 25 | Details |
| US5307271A | Reflexive teleoperated control system for a remotely contro… | Expired / Lapsed | 1990-09-28 | 1994-04-26 | 9 | Details |
| US5270252A | Method of forming platinum and platinum silicide schottky c… | Expired / Lapsed | 1992-07-28 | 1993-12-14 | 12 | Details |
| US5268920A | System for end-pumping a solid state laser using a large ap… | Expired / Lapsed | 1991-11-06 | 1993-12-07 | 29 | Details |
| US5206867A | Suppression of relaxation oscillations in flashpumped, two-… | Expired / Lapsed | 1992-01-31 | 1993-04-27 | 36 | Details |
| US5169676A | Control of crystallite size in diamond film chemical vapor … | Expired / Lapsed | 1991-05-16 | 1992-12-08 | 14 | Details |
| US5111401A | Navigational control system for an autonomous vehicle | Expired / Lapsed | 1990-05-19 | 1992-05-05 | 26 | Details |
| US5095312A | Impulse transmitter and quantum detection radar system | Expired / Lapsed | 1991-04-12 | 1992-03-10 | 9 | Details |
| US5086432A | Resonantly pumped, erbium-doped, 2.8 micron solid state las… | Expired / Lapsed | 1991-05-23 | 1992-02-04 | 23 | Details |
| US5084880A | Erbium-doped fluorozirconate fiber laser pumped by a diode … | Expired / Lapsed | 1990-07-02 | 1992-01-28 | 37 | Details |
| US5014279A | Laser diode pumped, erbium-doped, solid state laser with hi… | Expired / Lapsed | 1989-10-31 | 1991-05-07 | 33 | Details |
| US5003547A | Room-temperature, flashpumped, 1.96 micron solid state laser | Expired / Lapsed | 1989-12-29 | 1991-03-26 | 22 | Details |
| US4969150A | Tunable, continuous wave, thulium-doped, solid state laser | Expired / Lapsed | 1990-03-30 | 1990-11-06 | 25 | Details |
| US4932880A | Low-cost sound related trainer | Expired / Lapsed | 1989-04-07 | 1990-06-12 | 10 | Details |
| US4881080A | Apparatus for and a method of determining compass headings | Expired / Lapsed | 1985-06-24 | 1989-11-14 | 11 | Details |
| US4776991A | Scaled-up production of liposome-encapsulated hemoglobin | Expired / Lapsed | 1986-08-29 | 1988-10-11 | 6 | Details |
| US4718406A | Fiber optics image scope (micro-endoscope), ureteroscope | Expired / Lapsed | 1982-06-28 | 1988-01-12 | 4 | Details |
| US4660164A | Multiplexed digital correlator | Expired / Lapsed | 1983-12-05 | 1987-04-21 | 8 | Details |
| US4568396A | Wear improvement in titanium alloys by ion implantation | Expired / Lapsed | 1984-10-03 | 1986-02-04 | 10 | Details |
| US4555703A | Environmental mapping system | Expired / Lapsed | 1980-06-19 | 1985-11-26 | 18 | Details |
| US4531920A | Transverse waterjet propulsion with auxiliary inlets and im… | Expired / Lapsed | 1983-07-22 | 1985-07-30 | 8 | Details |
| US4508055A | Device for cryogenically fabricating source material for pl… | Expired / Lapsed | 1983-06-03 | 1985-04-02 | 15 | Details |
| US4499584A | Data validation monitor | Expired / Lapsed | 1983-05-26 | 1985-02-12 | 18 | Details |
| US4476549A | Calibration method for acoustic scattering measurements usi… | Expired / Lapsed | 1982-03-31 | 1984-10-09 | 7 | Details |
| US4442350A | Fiber optic sensor with enhanced immunity to random environ… | Expired / Lapsed | 1981-08-17 | 1984-04-10 | 20 | Details |
| US4433291A | Optical fiber for magnetostrictive responsive detection of … | Expired / Lapsed | 1981-01-09 | 1984-02-21 | 27 | Details |
| US4391515A | Optical transmitter/receiver apparatus sharing common optics | Expired / Lapsed | 1981-05-07 | 1983-07-05 | 2 | Details |
| US4378497A | Optical fiber magnetic field sensor with thermal and acoust… | Expired / Lapsed | 1981-03-06 | 1983-03-29 | 20 | Details |
| US4372642A | Multiple thin film absorption of reflected substrate modes … | Expired / Lapsed | 1980-11-25 | 1983-02-08 | 23 | Details |
| US4363114A | Low noise remote optical fiber sound detector | Expired / Lapsed | 1981-01-21 | 1982-12-07 | 25 | Details |
| US4347580A | Array convolver/correlator | Expired / Lapsed | 1980-07-21 | 1982-08-31 | 14 | Details |
| US4347485A | Excimer-pumped blue-green laser | Expired / Lapsed | 1979-05-23 | 1982-08-31 | 11 | Details |
| US4337111A | Method of obtaining strong and durable adhesion to rubber t… | Expired / Lapsed | 1978-10-02 | 1982-06-29 | 9 | Details |
| US4330593A | PZT/Polymer composites and their fabrication | Expired / Lapsed | 1980-11-13 | 1982-05-18 | 8 | Details |
| US4330763A | Resonantly pumped mid-ir laser | Expired / Lapsed | 1980-03-19 | 1982-05-18 | 8 | Details |
| US4330238A | Automatic actuator for variable speed pump | Expired / Lapsed | 1980-03-04 | 1982-05-18 | 14 | Details |
| US4325181A | Simplified fabrication method for high-performance FET | Expired / Lapsed | 1980-12-17 | 1982-04-20 | 9 | Details |
| US4297887A | High-sensitivity, low-noise, remote optical fiber | Expired / Lapsed | 1980-02-19 | 1981-11-03 | 12 | Details |
| US4284747A | Cis-trans fluoropolyol polyacrylate | Expired / Lapsed | 1980-02-25 | 1981-08-18 | 12 | Details |
| US4279469A | Separable fiber optic cable connector | Expired / Lapsed | 1977-10-03 | 1981-07-21 | 17 | Details |
| US4266850A | Integrated bias for waveguide amplitude modulator | Expired / Lapsed | 1980-01-28 | 1981-05-12 | 5 | Details |
| US4240441A | Carotid thermodilution catheter | Expired / Lapsed | 1978-10-10 | 1980-12-23 | 9 | Details |
| US4236867A | Friction reducing arrangement for hydraulic machines | Expired / Lapsed | 1979-07-27 | 1980-12-02 | 14 | Details |
| US4232313A | Tactical nagivation and communication system | Expired / Lapsed | 1972-09-22 | 1980-11-04 | 21 | Details |
| US4217581A | High range resolution radar rate aided range tracker | Expired / Lapsed | 1978-09-22 | 1980-08-12 | 9 | Details |
| US4193130A | Fiber optic hydrophone for use as an underwater electroacou… | Expired / Lapsed | 1978-09-07 | 1980-03-11 | 8 | Details |
| US4193088A | Optical heterodyne system for imaging in a dynamic diffusiv… | Expired / Lapsed | 1978-08-02 | 1980-03-11 | 12 | Details |
| US4174177A | False target warning system | Expired / Lapsed | 1978-08-14 | 1979-11-13 | 9 | Details |
| US4168482A | Combination acoustic filter plate and liquid lens | Expired / Lapsed | 1978-07-14 | 1979-09-18 | 15 | Details |
| US4166229A | Piezoelectric polymer membrane stress gage | Expired / Lapsed | 1978-02-23 | 1979-08-28 | 7 | Details |
| US4162397A | Fiber optic acoustic sensor | Expired / Lapsed | 1978-06-28 | 1979-07-24 | 11 | Details |
| US4155065A | Optic scattering acoustic transducer | Expired / Lapsed | 1977-09-12 | 1979-05-15 | 61 | Details |
| US4151893A | Wing in ground effect vehicle | Expired / Lapsed | 1977-09-08 | 1979-05-01 | 23 | Details |
| US4151411A | Laser safety goggles | Expired / Lapsed | 1978-02-09 | 1979-04-24 | 34 | Details |
| US4139897A | Fast two dimensional fourier transform device | Expired / Lapsed | 1977-03-18 | 1979-02-13 | 11 | Details |
| US4133204A | Roughness diagnostic tool | Expired / Lapsed | 1978-05-15 | 1979-01-09 | 14 | Details |
| US4132681A | Fluorinated polyether network polymers | Expired / Lapsed | 1976-10-29 | 1979-01-02 | 6 | Details |
| US4128300A | Optical logic elements | Expired / Lapsed | 1977-09-26 | 1978-12-05 | 18 | Details |
| US4119164A | Stand-aid invalid wheelchair | Expired / Lapsed | 1977-08-01 | 1978-10-10 | 7 | Details |
| US4118782A | Digital sound velocity calculator | Expired / Lapsed | 1977-03-24 | 1978-10-03 | 8 | Details |
| US4115753A | Fiber optic acoustic array | Expired / Lapsed | 1977-07-18 | 1978-09-19 | 13 | Details |
| US4112430A | Beamformer for wideband signals | Expired / Lapsed | 1977-06-01 | 1978-09-05 | 16 | Details |
| US4110004A | Complex photodichroic spatial filter | Expired / Lapsed | 1977-01-12 | 1978-08-29 | 8 | Details |
| US4104533A | Wideband optical isolator | Expired / Lapsed | 1977-02-28 | 1978-08-01 | 4 | Details |
| US4097749A | Fourier power spectra of optical images using CCD's | Expired / Lapsed | 1977-01-06 | 1978-06-27 | 7 | Details |
| US4093380A | Optical systems utilizing three-wave heterodyne detectors | Expired / Lapsed | 1976-11-04 | 1978-06-06 | 6 | Details |
| US4088387A | Optical switch | Expired / Lapsed | 1977-02-22 | 1978-05-09 | 15 | Details |
| US4086769A | Compound memory engine | Expired / Lapsed | 1975-05-19 | 1978-05-02 | 9 | Details |
| US4086616A | All-weather multi-spectral imaging system | Expired / Lapsed | 1976-12-23 | 1978-04-25 | 7 | Details |
| US4081787A | Prioritied photo-isolated digital data transmission system | Expired / Lapsed | 1976-12-27 | 1978-03-28 | 7 | Details |
| US4081214A | Low altitude optical altimeter | Expired / Lapsed | 1976-07-06 | 1978-03-28 | 2 | Details |
| US4073010A | Correlation methods and apparatus utilizing mellin transfor… | Expired / Lapsed | 1976-07-23 | 1978-02-07 | 13 | Details |
| US4070094A | Optical waveguide interferometer modulator-switch | Expired / Lapsed | 1975-08-25 | 1978-01-24 | 9 | Details |
| US4054879A | Dual-frequency, remote ocean-wave spectrometer | Expired / Lapsed | 1976-11-19 | 1977-10-18 | 16 | Details |
| US4045140A | Means for near real time C-W laser source characterization | Expired / Lapsed | 1975-12-15 | 1977-08-30 | 7 | Details |
| US4041500A | Line scan radar antenna using a single motor | Expired / Lapsed | 1976-05-12 | 1977-08-09 | 12 | Details |
| US4041397A | Satellite up link diversity switch | Expired / Lapsed | 1976-04-28 | 1977-08-09 | 2 | Details |
| US4039833A | High density infrared detector array | Expired / Lapsed | 1976-08-17 | 1977-08-02 | 11 | Details |
| US4032036A | Retaining clip | Expired / Lapsed | 1976-11-01 | 1977-06-28 | 14 | Details |
| US4030831A | Phase detector for optical figure sensing | Expired / Lapsed | 1976-03-22 | 1977-06-21 | 3 | Details |
| US4030038A | Multiple dumping integrator | Expired / Lapsed | 1976-02-27 | 1977-06-14 | 4 | Details |
| US4017859A | Multi-path signal enhancing apparatus | Expired / Lapsed | 1975-12-22 | 1977-04-12 | 6 | Details |
| US4016407A | Universal modular controller | Expired / Lapsed | 1975-09-19 | 1977-04-05 | 4 | Details |
| US4014020A | Automatic gain control circuit for high range resolution co… | Expired / Lapsed | 1971-08-13 | 1977-03-22 | 4 | Details |
| US4012089A | Electronic equipment enclosure | Expired / Lapsed | 1974-04-08 | 1977-03-15 | 5 | Details |
| US4009960A | Passive optical rangefinder | Expired / Lapsed | 1975-02-12 | 1977-03-01 | 10 | Details |
| US4005282A | Decometer | Expired / Lapsed | 1975-09-25 | 1977-01-25 | 10 | Details |
| US4000525A | Ceramic prosthetic implant suitable for a knee joint plateau | Expired / Lapsed | 1975-08-21 | 1977-01-04 | 10 | Details |
| US3982246A | General method of geometrical passive ranging | Expired / Lapsed | 1961-02-20 | 1976-09-21 | 14 | Details |
| US3978797A | Radiometric target detection device | Expired / Lapsed | 1971-04-28 | 1976-09-07 | 2 | Details |
| US3973258A | Transient event data acquisition apparatus for use with rad… | Expired / Lapsed | 1975-01-24 | 1976-08-03 | 15 | Details |
| US3972050A | End fed electric microstrip quadrupole antenna | Expired / Lapsed | 1975-04-24 | 1976-07-27 | 7 | Details |
| US3970862A | Polymeric sensor of vibration and dynamic pressure | Expired / Lapsed | 1974-06-25 | 1976-07-20 | 8 | Details |
| US3964013A | Cavitating parametric underwater acoustic source | Expired / Lapsed | 1974-10-22 | 1976-06-15 | 7 | Details |
| US3949378A | Computer memory addressing employing base and index registe… | Expired / Lapsed | 1974-12-09 | 1976-04-06 | 4 | Details |
| US3947850A | Notch fed electric microstrip dipole antenna | Expired / Lapsed | 1975-04-24 | 1976-03-30 | 13 | Details |
| US3943514A | Dual base line interferometer antenna | Expired / Lapsed | 1970-11-23 | 1976-03-09 | 8 | Details |
| US3933410A | Optical connector with single scrambling volume | Expired / Lapsed | 1974-11-29 | 1976-01-20 | 5 | Details |
| US3923374A | High speed electro-optic waveguide modulator | Expired / Lapsed | 1974-07-22 | 1975-12-02 | 10 | Details |
| US3922063A | Winch mounted optical data transmission cable with fluid co… | Expired / Lapsed | 1974-08-29 | 1975-11-25 | 6 | Details |
| US3918100A | Sputtering of bone on prostheses | Expired / Lapsed | 1974-05-13 | 1975-11-11 | 14 | Details |
| US3916313A | PSK-FSK spread spectrum modulation/demodulation | Expired / Lapsed | 1974-11-25 | 1975-10-28 | 12 | Details |
| US3911345A | Adaptive control system using command tailoring | Expired / Lapsed | 1973-06-04 | 1975-10-07 | 11 | Details |
| US3909108A | Optical switch and modulator | Expired / Lapsed | 1974-05-28 | 1975-09-30 | 5 | Details |
| US3908933A | Guided missile | Expired / Lapsed | 1956-06-26 | 1975-09-30 | 37 | Details |
| US3906493A | Autocorrelation type spectral comparison fuze system | Expired / Lapsed | 1959-03-27 | 1975-09-16 | 10 | Details |
| US3903407A | Method for correlating frequency-modulated signals | Expired / Lapsed | 1963-12-11 | 1975-09-02 | 6 | Details |
| US3899145A | Laser transmitting and receiving lens optics | Expired / Lapsed | 1973-07-20 | 1975-08-12 | 8 | Details |
| US3890840A | Laser controlled fathometer | Expired / Lapsed | 1974-06-07 | 1975-06-24 | 9 | Details |
| US3889108A | Adaptive low pass filter | Expired / Lapsed | 1974-07-25 | 1975-06-10 | 5 | Details |
| US3885240A | Storage radar system | Expired / Lapsed | 1967-06-27 | 1975-05-20 | 14 | Details |
| US3868686A | Range tracking device for a portable attack warning radar | Expired / Lapsed | 1973-04-16 | 1975-02-25 | 4 | Details |
| CA962835A | Interferometric remote gauge | Expired / Lapsed | 1972-06-12 | 1975-02-18 | 0 | Details |
| US3865009A | Launcher mount | Expired / Lapsed | 1973-09-13 | 1975-02-11 | 7 | Details |
| US3852222A | Fluorinated epoxy resins | Expired / Lapsed | 1973-06-25 | 1974-12-03 | 15 | Details |
| US3846764A | Technique for information storage using anisotropic color c… | Expired / Lapsed | 1973-05-18 | 1974-11-05 | 13 | Details |
| US3842841A | Constant current power pack for bone healing and method of … | Expired / Lapsed | 1971-10-29 | 1974-10-22 | 16 | Details |
| US3833300A | Three {37 d{38 {11 weapons sight | Expired / Lapsed | 1973-05-14 | 1974-09-03 | 13 | Details |
| US3831013A | Correlators using shift registers | Expired / Lapsed | 1973-02-20 | 1974-08-20 | 7 | Details |
| US3831137A | Acousto-optic underwater detector | Expired / Lapsed | 1972-04-14 | 1974-08-20 | 5 | Details |
| US3825320A | High-pressure optical bulkhead penetrator | Expired / Lapsed | 1973-03-02 | 1974-07-23 | 10 | Details |
| US3816735A | Multi-channel optical correlator system | Expired / Lapsed | 1972-03-15 | 1974-06-11 | 12 | Details |
| US3806915A | Multithreshold analog to digital converter | Expired / Lapsed | 1972-09-05 | 1974-04-23 | 4 | Details |
| US3804977A | Colored running light simulator | Expired / Lapsed | 1972-11-20 | 1974-04-16 | 7 | Details |
| US3805170A | Transition detector | Expired / Lapsed | 1969-01-03 | 1974-04-16 | 7 | Details |
| US3803387A | Alignment error detection system | Expired / Lapsed | 1972-09-20 | 1974-04-09 | 2 | Details |
| US3803544A | Pressure control system | Expired / Lapsed | 1972-07-17 | 1974-04-09 | 18 | Details |
| US3798454A | Device for counting accelerations, measuring magnitudes the… | Expired / Lapsed | 1972-04-25 | 1974-03-19 | 5 | Details |
| US3794272A | Electro-optical guidance system | Expired / Lapsed | 1967-02-13 | 1974-02-26 | 9 | Details |
| US3793070A | Method of varying the carrier concentration of lead-tin sul… | Expired / Lapsed | 1971-06-01 | 1974-02-19 | 14 | Details |
| US3789445A | Buoy construction | Expired / Lapsed | 1971-11-12 | 1974-02-05 | 3 | Details |
| US3790276A | Direct measurement of ship body distortion using a laser be… | Expired / Lapsed | 1971-04-07 | 1974-02-05 | 6 | Details |
| US3789350A | Reduced bandwidth processing for ultrasonic image conversion | Expired / Lapsed | 1972-10-13 | 1974-01-29 | 10 | Details |
| US3787619A | Wide angle display system | Expired / Lapsed | 1972-06-07 | 1974-01-22 | 12 | Details |
| US3786481A | Digital television character generator | Expired / Lapsed | 1972-04-19 | 1974-01-15 | 8 | Details |
| US3784235A | Tubular adhesive joint with snap lock | Expired / Lapsed | 1971-10-08 | 1974-01-08 | 9 | Details |
| US3778635A | Liquid parametric optical mixing device | Expired / Lapsed | 1972-06-08 | 1973-12-11 | 7 | Details |
| US3778007A | Rod television-guided drone to perform reconnaissance and o… | Expired / Lapsed | 1972-05-08 | 1973-12-11 | 12 | Details |
| US3778833A | Magnetic-electronic position encoder | Expired / Lapsed | 1971-07-29 | 1973-12-11 | 4 | Details |
| US3771416A | Removable weapons rail | Expired / Lapsed | 1971-09-22 | 1973-11-13 | 7 | Details |
| US3771065A | Tunable internal-feedback liquid crystal-dye laser | Expired / Lapsed | 1972-08-09 | 1973-11-06 | 5 | Details |
| US3763463A | Shrapnel sonar | Expired / Lapsed | 1972-09-21 | 1973-10-02 | 9 | Details |
| US3757093A | Self leveling system using periodic perturbations | Expired / Lapsed | 1972-09-22 | 1973-09-04 | 7 | Details |
| US3750174A | Aided angle tracking device | Expired / Lapsed | 1963-11-20 | 1973-07-31 | 15 | Details |
| US3746454A | Infrared receiver for optical radar | Expired / Lapsed | 1971-03-03 | 1973-07-17 | 7 | Details |
| US3745573A | Proximity fuze circuit | Expired / Lapsed | 1963-09-24 | 1973-07-10 | 8 | Details |
| US3737120A | Radar map comparison guidance system | Expired / Lapsed | 1967-12-07 | 1973-06-05 | 7 | Details |
| US3733981A | Lens protective system for deep sea camera | Expired / Lapsed | 1972-07-17 | 1973-05-22 | 6 | Details |
| US3735271A | Pulse width coded signal detector | Expired / Lapsed | 1971-10-22 | 1973-05-22 | 4 | Details |
| US3727225A | Ranging and detection system | Expired / Lapsed | 1962-05-29 | 1973-04-10 | 4 | Details |
| US3725758A | Automatic feedback closed loop system for forward speed con… | Expired / Lapsed | 1971-06-01 | 1973-04-03 | 7 | Details |
| US3721500A | Instrument for measuring the depolarization of backscattere… | Expired / Lapsed | 1971-08-06 | 1973-03-20 | 6 | Details |
| US3721410A | Rotating surveillance vehicle | Expired / Lapsed | 1962-08-29 | 1973-03-20 | 2 | Details |
| US3720007A | Visual display simulator | Expired / Lapsed | 1971-01-04 | 1973-03-13 | 5 | Details |
| US3718927A | Automatic digital error detector for radar range tracking | Expired / Lapsed | 1971-04-23 | 1973-02-27 | 5 | Details |
| US3715748A | Method and apparatus for measuring the intensity of atmosph… | Expired / Lapsed | 1971-04-30 | 1973-02-06 | 6 | Details |
| US3706772A | Fluorodiglycidyl ethers | Expired / Lapsed | 1971-03-23 | 1972-12-19 | 0 | Details |
| US3699316A | Strapped-down attitude reference system | Expired / Lapsed | 1971-05-19 | 1972-10-17 | 5 | Details |
| US3699339A | Two-color radiometer | Expired / Lapsed | 1971-04-07 | 1972-10-17 | 10 | Details |
| US3695555A | Gun-launched glide vehicle with a mid-course and terminal g… | Expired / Lapsed | 1970-06-12 | 1972-10-03 | 11 | Details |
| US3694146A | Formaldehyde gas generator/disseminator | Expired / Lapsed | 1971-01-25 | 1972-09-26 | 0 | Details |
| US3680100A | Randomly phase coded antenna technique for search radar | Expired / Lapsed | 1970-12-15 | 1972-07-25 | 14 | Details |
| US3680088A | Recursive integrator | Expired / Lapsed | 1970-03-30 | 1972-07-25 | 8 | Details |
| US3680115A | Very low frequency location finding system | Expired / Lapsed | 1969-04-29 | 1972-07-25 | 6 | Details |
| US3680124A | System for determining azimuth | Expired / Lapsed | 1964-05-11 | 1972-07-25 | 28 | Details |
| US3678468A | Digital data storage system | Expired / Lapsed | 1970-12-15 | 1972-07-18 | 12 | Details |
| US3678388A | Ground station system for retransmitting satellite facsimil… | Expired / Lapsed | 1970-12-14 | 1972-07-18 | 4 | Details |
| US3678283A | Radiation sensitive optical tracker | Expired / Lapsed | 1970-10-22 | 1972-07-18 | 12 | Details |
| US3673501A | Control logic for linear sequence generators and ring count… | Expired / Lapsed | 1971-08-18 | 1972-06-27 | 10 | Details |
| US3671966A | Multiple target separator | Expired / Lapsed | 1970-08-27 | 1972-06-20 | 8 | Details |
| US3670151A | Correlators using shift registers | Expired / Lapsed | 1970-06-05 | 1972-06-13 | 9 | Details |
| US3668308A | A television system for terrain surveillance | Expired / Lapsed | 1970-07-20 | 1972-06-06 | 14 | Details |
| US3667054A | Pulse train decoder with pulse width rejection | Expired / Lapsed | 1971-02-10 | 1972-05-30 | 4 | Details |
| US3665326A | Automatic threshold detector with selectable percentage of … | Expired / Lapsed | 1970-03-30 | 1972-05-23 | 6 | Details |
| US3660777A | Laser pulse time modulation q-switch | Expired / Lapsed | 1971-04-16 | 1972-05-02 | 14 | Details |
| US3660647A | Automatic signal delay tracking system | Expired / Lapsed | 1969-12-24 | 1972-05-02 | 9 | Details |
| US3649934A | Quasi-optical low-pass absorption type filtering system | Expired / Lapsed | 1970-07-17 | 1972-03-14 | 6 | Details |
| US3640178A | Rate stabilization system for a vehicle mounted device | Expired / Lapsed | 1970-04-29 | 1972-02-08 | 12 | Details |
| US3633988A | Helmet-mounted holographic aiming sight | Expired / Lapsed | 1970-07-10 | 1972-01-11 | 6 | Details |
| US3633003A | Off-leveling computer | Expired / Lapsed | 1970-02-11 | 1972-01-04 | 9 | Details |
| US3626372A | Digital information transmission system | Expired / Lapsed | 1970-04-08 | 1971-12-07 | 12 | Details |
| US3621131A | Visual environment simulator | Expired / Lapsed | 1969-11-21 | 1971-11-16 | 6 | Details |
| US3615135A | Laser ranging with polarization modulation | Expired / Lapsed | 1969-05-16 | 1971-10-26 | 0 | Details |
| US3614720A | Logarithmic three-color display sonar | Expired / Lapsed | 1969-11-13 | 1971-10-19 | 15 | Details |
| US3614316A | Secure communication system | Expired / Lapsed | 1964-05-20 | 1971-10-19 | 5 | Details |
| US3612761A | Large-area display system | Expired / Lapsed | 1969-12-19 | 1971-10-12 | 8 | Details |
| US3594556A | Optical sight with electronic image stabilization | Expired / Lapsed | 1969-01-08 | 1971-07-20 | 12 | Details |
| US3576944A | Scanning radiometer with plural reference sources | Expired / Lapsed | 1969-01-28 | 1971-05-04 | 11 | Details |
| US3573338A | Fresnel image computer | Expired / Lapsed | 1965-08-13 | 1971-04-06 | 4 | Details |
| US3568663A | Physiological data acquisition system | Expired / Lapsed | 1968-12-23 | 1971-03-09 | 4 | Details |
| US3565060A | Biopotential sensor employing integrated circuitry | Expired / Lapsed | 1968-08-21 | 1971-02-23 | 4 | Details |
| US3564455A | Stable square-wave frequency generator using two operationa… | Expired / Lapsed | 1969-07-24 | 1971-02-16 | 0 | Details |
| US3560913A | Acoustic pulse focusing means | Expired / Lapsed | 1968-10-09 | 1971-02-02 | 0 | Details |
| US3558369A | Method of treating variable transition temperature alloys | Expired / Lapsed | 1969-06-12 | 1971-01-26 | 0 | Details |
| US3550123A | Real time passing scene display | Expired / Lapsed | 1967-12-07 | 1970-12-22 | 0 | Details |
| US3548320A | Digital fm sweep generator | Expired / Lapsed | 1968-05-23 | 1970-12-15 | 0 | Details |
| US3542934A | Submarine simulator | Expired / Lapsed | 1968-03-06 | 1970-11-24 | 0 | Details |
| US3541552A | Synchronization system | Expired / Lapsed | 1968-07-26 | 1970-11-17 | 0 | Details |
| US3538443A | General purpose logic package | Expired / Lapsed | 1968-06-11 | 1970-11-03 | 0 | Details |
| US3538313A | Coded strip positioning apparatus | Expired / Lapsed | 1968-05-15 | 1970-11-03 | 0 | Details |
| US3525075A | Automatic data reduction system | Expired / Lapsed | 1967-03-14 | 1970-08-18 | 0 | Details |
| US3517170A | System or apparatus for optimizing the operation of a combu… | Expired / Lapsed | 1967-03-29 | 1970-06-23 | 0 | Details |
| US3512493A | Adjustable buoyancy lift device | Expired / Lapsed | 1968-04-23 | 1970-05-19 | 0 | Details |
| US3505637A | Digital overflow threshold for sonar | Expired / Lapsed | 1964-03-10 | 1970-04-07 | 2 | Details |
| US3500302A | Sonar bathymetry system transmit-receive sequence programmer | Expired / Lapsed | 1969-01-13 | 1970-03-10 | 0 | Details |
| US3500217A | Frequency discriminator employing quadrature demodulation t… | Expired / Lapsed | 1967-07-31 | 1970-03-10 | 0 | Details |
| US3500240A | Simple traveling wave laser using total - internal - reflec… | Expired / Lapsed | 1964-11-30 | 1970-03-10 | 0 | Details |
| US3491358A | Atmospheric turbulence detection system | Expired / Lapsed | 1968-02-02 | 1970-01-20 | 0 | Details |
| US3491340A | Digital data communication network monitor system | Expired / Lapsed | 1966-10-11 | 1970-01-20 | 0 | Details |
| US3483744A | Rolling wheel test device | Expired / Lapsed | 1967-08-21 | 1969-12-16 | 0 | Details |
| US3477295A | Pressure transducer | Expired / Lapsed | 1967-06-12 | 1969-11-11 | 0 | Details |
| US3474264A | Circuit for varying the hysteresis of a schmitt trigger | Expired / Lapsed | 1966-06-16 | 1969-10-21 | 0 | Details |
| US3469186A | Stimulus injection system for localizing defective componen… | Expired / Lapsed | 1967-03-14 | 1969-09-23 | 0 | Details |
| US3447961A | Movable substrate method of vaporizing and depositing elect… | Expired / Lapsed | 1967-03-20 | 1969-06-03 | 0 | Details |
| US3448456A | Reflector antenna inflatable with foamed plastic | Expired / Lapsed | 1966-09-12 | 1969-06-03 | 2 | Details |
| US3438038A | Nonreciprocal omnidirectional rapid scan antenna system | Expired / Lapsed | 1966-08-17 | 1969-04-08 | 0 | Details |
| US3435452A | Surrogate viewing system | Expired / Lapsed | 1967-08-25 | 1969-03-25 | 0 | Details |
| US3425771A | Laser deflection system for display applications | Expired / Lapsed | 1964-12-04 | 1969-02-04 | 0 | Details |
| US3420989A | Synchronizer for digital counters | Expired / Lapsed | 1965-07-16 | 1969-01-07 | 0 | Details |
| US3412334A | Digital correlator | Expired / Lapsed | 1964-05-06 | 1968-11-19 | 0 | Details |
| US3410641A | Laser range finder device | Expired / Lapsed | 1965-06-25 | 1968-11-12 | 1 | Details |
| US3409869A | Deep submergence acoustic transducer array construction | Expired / Lapsed | 1965-07-21 | 1968-11-05 | 0 | Details |
| US3400399A | System and method for obtaining accurate tactical navigation | Expired / Lapsed | 1966-12-29 | 1968-09-03 | 0 | Details |
| US3394313A | Symmetrically phase modulated transmission system with mult… | Expired / Lapsed | 1964-09-14 | 1968-07-23 | 0 | Details |
| US3388397A | Radio navigation receiving system utilizing agc for switchi… | Expired / Lapsed | 1966-09-28 | 1968-06-11 | 0 | Details |
| US3388377A | Method and apparatus for digital data processing | Expired / Lapsed | 1964-04-16 | 1968-06-11 | 0 | Details |
| US3388381A | Data processing means | Expired / Lapsed | 1962-12-31 | 1968-06-11 | 1 | Details |
| US3386364A | Synchronous intervalometer | Expired / Lapsed | 1965-07-19 | 1968-06-04 | 0 | Details |
| US3383686A | Diverse frequency echo detection system with doppler freque… | Expired / Lapsed | 1967-01-30 | 1968-05-14 | 0 | Details |
| US3378939A | Regulating valve for ejection seat trainer | Expired / Lapsed | 1966-07-18 | 1968-04-23 | 0 | Details |
| US3380035A | Multiple element analog storage system | Expired / Lapsed | 1964-08-24 | 1968-04-23 | 2 | Details |
| US3368064A | Ballistic computer for low-altitude, loft-bombing systems | Expired / Lapsed | 1963-08-27 | 1968-02-06 | 0 | Details |
| US3366735A | Edge signal circuit for automatic tracking system which gen… | Expired / Lapsed | 1964-08-17 | 1968-01-30 | 0 | Details |
| US3364365A | Pulse amplitude to time conversion circuit | Expired / Lapsed | 1965-06-29 | 1968-01-16 | 0 | Details |
| US3363858A | Doppler homing system | Expired / Lapsed | 1958-09-23 | 1968-01-16 | 2 | Details |
| US2689347A | Timing apparatus | Expired / Lapsed | 1946-04-25 | 1954-09-14 | 0 | Details |
| US2688697A | Pulse stretcher circuit | Expired / Lapsed | 1946-03-07 | 1954-09-07 | 0 | Details |
| US2686877A | Automatic frequency control system | Expired / Lapsed | 1946-03-27 | 1954-08-17 | 0 | Details |
| US2686284A | Antenna sector scan control circuit | Expired / Lapsed | 1945-12-27 | 1954-08-10 | 0 | Details |
| US2685671A | Apparatus for determining relationship between tube-noise a… | Expired / Lapsed | 1952-07-02 | 1954-08-03 | 0 | Details |
| US2684448A | Controllable pulse generator | Expired / Lapsed | 1952-06-03 | 1954-07-20 | 0 | Details |
| US2684479A | Position or voltage comparator circuit | Expired / Lapsed | 1949-10-11 | 1954-07-20 | 0 | Details |
| US2682656A | Simultaneous lobing system | Expired / Lapsed | 1946-10-03 | 1954-06-29 | 0 | Details |
| US2682001A | Radiation measuring meter | Expired / Lapsed | 1951-08-02 | 1954-06-22 | 0 | Details |
| US2681414A | Automatic frequency control circuit | Expired / Lapsed | 1946-02-01 | 1954-06-15 | 0 | Details |
| US2677797A | Motor control system for scanning devices | Expired / Lapsed | 1945-12-28 | 1954-05-04 | 0 | Details |
| US2677199A | Simulated scan for trainers | Expired / Lapsed | 1945-11-30 | 1954-05-04 | 0 | Details |
| US2677760A | Pulse width discriminator | Expired / Lapsed | 1945-09-17 | 1954-05-04 | 0 | Details |
| US2648038A | Antenna sector scan control | Expired / Lapsed | 1946-05-03 | 1953-08-04 | 0 | Details |
| US2644124A | 400 cycle electrohydraulic steering system for guided missi… | Expired / Lapsed | 1948-01-23 | 1953-06-30 | 0 | Details |
| US2641717A | Transistor one-shot multivibrator | Expired / Lapsed | 1952-08-28 | 1953-06-09 | 0 | Details |
| US2640984A | Gating system for plan position indicators | Expired / Lapsed | 1946-04-18 | 1953-06-02 | 0 | Details |
| US2640092A | Low reactance shunt | Expired / Lapsed | 1949-11-17 | 1953-05-26 | 0 | Details |
| US2638571A | Stabilization of filament supply voltage | Expired / Lapsed | 1945-09-14 | 1953-05-12 | 0 | Details |
| US2599555A | Aircraft rocket launcher | Expired / Lapsed | 1946-03-11 | 1952-06-10 | 0 | Details |
| US2599944A | Absorbent body for electromagnetic waves | Expired / Lapsed | 1943-05-11 | 1952-06-10 | 2 | Details |
| US2595263A | Apparatus for measuring the phase shift between the input a… | Expired / Lapsed | 1946-04-12 | 1952-05-06 | 0 | Details |
| US2594535A | Multiple channel electronic switch | Expired / Lapsed | 1944-04-26 | 1952-04-29 | 0 | Details |
| US2594104A | Linear sweep circuits | Expired / Lapsed | 1943-12-16 | 1952-04-22 | 0 | Details |
| US2591846A | Parallax corrector for use in gun control | Expired / Lapsed | 1948-12-30 | 1952-04-08 | 0 | Details |
| US2591088A | Video blanking circuit | Expired / Lapsed | 1945-11-30 | 1952-04-01 | 0 | Details |
| US2514297A | Apparatus for observing the conduct of a projectile in a gun | Expired / Lapsed | 1943-03-03 | 1950-07-04 | 0 | Details |
| US2485847A | Combination magnetometer and gradiometer | Expired / Lapsed | 1944-09-23 | 1949-10-25 | 0 | Details |
| US2447333A | Ultra-audible sound reception | Expired / Lapsed | 1931-12-30 | 1948-08-17 | 0 | Details |
| US2445306A | Electrolyte for primary cells comprising lithium bromide | Expired / Lapsed | 1943-10-06 | 1948-07-13 | 0 | Details |