Patent Explorer
Browse, filter, and analyze 133 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3810100A | Looped direct switching system | Collins Radio Co | Expired / Lapsed | 1971-12-16 | 1974-05-07 | 1991-12-16 | 0.0 yrs | 53 | |
| US3810018A | Distortion compensator for phase modulation systems | Collins Radio Co | Expired / Lapsed | 1972-06-13 | 1974-05-07 | 1992-06-13 | 0.0 yrs | 10 | |
| US3755789A | Expandable computer processor and communication system | Collins Radio Co | Expired / Lapsed | 1972-10-30 | 1973-08-28 | 1992-10-30 | 0.0 yrs | 15 | |
| US3692941A | Data exchange and coupling apparatus | Collins Radio Co | Expired / Lapsed | 1970-09-23 | 1972-09-19 | 1990-09-23 | 0.0 yrs | 14 | |
| US3681759A | Data loop synchronizing apparatus | Collins Radio Co | Expired / Lapsed | 1970-08-06 | 1972-08-01 | 1990-08-06 | 0.0 yrs | 21 | |
| US3665380A | Electronic aids for aquanauts | Collins Radio Co | Expired / Lapsed | 1970-06-18 | 1972-05-23 | 1990-06-18 | 0.0 yrs | 27 | |
| US3659271A | Multichannel communication system | Collins Radio Co | Expired / Lapsed | 1970-10-16 | 1972-04-25 | 1990-10-16 | 0.0 yrs | 5 | |
| US3651315A | Digital products inspection system | Collins Radio Co | Expired / Lapsed | 1970-05-14 | 1972-03-21 | 1990-05-14 | 0.0 yrs | 42 | |
| US3618085A | Error detector for digital dme systems | Collins Radio Co | Expired / Lapsed | 1969-11-14 | 1971-11-02 | 1989-11-14 | 0.0 yrs | 8 | |
| US3569750A | Monolithic multifrequency resonator | Collins Radio Co | Expired / Lapsed | 1968-11-29 | 1971-03-09 | 1988-11-29 | 0.0 yrs | 5 | |
| US3568067A | Frequency discriminator with output indicative of difference between input and local reference signals | Collins Radio Co | Expired / Lapsed | 1969-06-13 | 1971-03-02 | 1989-06-13 | 0.0 yrs | 10 | |
| US3544976A | Digitalized communication system with computation and control capabilities employing transmission line loop for data transmission | Collins Radio Co | Expired / Lapsed | 1968-07-02 | 1970-12-01 | 1988-07-02 | 0.0 yrs | 0 | |
| US3539825A | Highly linear voltage to frequency converter | Collins Radio Co | Expired / Lapsed | 1967-01-24 | 1970-11-10 | 1987-01-24 | 0.0 yrs | 0 | |
| US3514719A | Electric analog angular rate deriving circuit | Collins Radio Co | Expired / Lapsed | 1967-06-21 | 1970-05-26 | 1987-06-21 | 0.0 yrs | 0 | |
| US3506815A | Binary converter | Collins Radio Co | Expired / Lapsed | 1966-12-28 | 1970-04-14 | 1986-12-28 | 0.0 yrs | 0 | |
| US3465339A | Method and means for detecting air turbulence | Collins Radio Co | Expired / Lapsed | 1965-10-22 | 1969-09-02 | 1985-10-22 | 0.0 yrs | 0 | |
| US3436655A | Rotation measuring device for very slowly rotating shaft | Collins Radio Co | Expired / Lapsed | 1966-04-20 | 1969-04-01 | 1986-04-20 | 0.0 yrs | 0 | |
| US3413562A | Clipper amplifier circuit | Collins Radio Co | Expired / Lapsed | 1967-02-20 | 1968-11-26 | 1987-02-20 | 0.0 yrs | 0 | |
| US3402389A | Message verification using associative memory techniques | Collins Radio Co | Expired / Lapsed | 1965-01-06 | 1968-09-17 | 1985-01-06 | 0.0 yrs | 0 | |
| US3384873A | Selective calling system | Collins Radio Co | Expired / Lapsed | 1965-01-22 | 1968-05-21 | 1985-01-22 | 0.0 yrs | 0 |
Showing 1 to 20 of 133 patents
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