Patent Explorer
Browse, filter, and analyze 133 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2816267A | Pulse-code modulation device | Hartford National Bank and Trust Co | Expired / Lapsed | 1954-09-15 | 1957-12-10 | 1974-09-15 | 0.0 yrs | 0 | |
| US2780682A | Difference amplifier | Hartford National Bank and Trust Co | Expired / Lapsed | 1955-01-24 | 1957-02-05 | 1975-01-24 | 0.0 yrs | 0 | |
| US2775726A | Apparatus for registering pulses | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-11-01 | 1956-12-25 | 1971-11-01 | 0.0 yrs | 0 | |
| US2772862A | Device for the transmission of mechanical vibrations to a material medium | Hartford National Bank and Trust Co | Expired / Lapsed | 1954-02-10 | 1956-12-04 | 1974-02-10 | 0.0 yrs | 0 | |
| US2768293A | Frequency-modulated oscillator with automatic frequency correction | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-03-23 | 1956-10-23 | 1971-03-23 | 0.0 yrs | 0 | |
| US2760002A | Time-multiplex pulse modulation communication system | Hartford National Bank and Trust Co | Expired / Lapsed | 1950-10-14 | 1956-08-21 | 1970-10-14 | 0.0 yrs | 0 | |
| US2752496A | Circuit arrangement for automatic resonance tuning of a high-frequency generator, more particularly for the purpose of therapy | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-02-26 | 1956-06-26 | 1972-02-26 | 0.0 yrs | 0 | |
| US2751318A | Method of manufacturing coils | Hartford National Bank and Trust Co | Expired / Lapsed | 1954-05-14 | 1956-06-19 | 1974-05-14 | 0.0 yrs | 2 | |
| US2748317A | Mutator system, more particularly a rectifying system, in the graetz arrangement, and to a method of controlling such a system | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-01-04 | 1956-05-29 | 1971-01-04 | 0.0 yrs | 0 | |
| US2746241A | Hot-gas reciprocating engine | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-04-17 | 1956-05-22 | 1972-04-17 | 0.0 yrs | 0 | |
| US2744959A | Pulse-code modulation transmitter | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-04-14 | 1956-05-08 | 1971-04-14 | 0.0 yrs | 0 | |
| US2739265A | Circuit-arrangement for use in automatic telephone system | Hartford National Bank and Trust Co | Expired / Lapsed | 1953-05-05 | 1956-03-20 | 1973-05-05 | 0.0 yrs | 0 | |
| US2736890A | Color-television camera device | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-07-15 | 1956-02-28 | 1972-07-15 | 0.0 yrs | 0 | |
| US2728026A | Circuit-arrangement for scanning equidistant lines on a screen of a cathode-ray tubeand cathode-ray tube for use in such a circuit | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-12-26 | 1955-12-20 | 1971-12-26 | 0.0 yrs | 0 | |
| US2722617A | Magnetic circuits and devices | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-11-19 | 1955-11-01 | 1972-11-19 | 0.0 yrs | 0 | |
| US2719191A | Circuit-arrangement of the kind comprising a plurality of amplifiers fed in parallel | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-09-12 | 1955-09-27 | 1971-09-12 | 0.0 yrs | 0 | |
| US2719250A | Electronic register circuit | Hartford National Bank and Trust Co | Expired / Lapsed | 1952-10-01 | 1955-09-27 | 1972-10-01 | 0.0 yrs | 0 | |
| US2699494A | Suppressed carrier single side band radio transmission system | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-03-23 | 1955-01-11 | 1971-03-23 | 0.0 yrs | 0 | |
| US2698622A | Phase sensitive control for shortwave therapy devices | Hartford National Bank and Trust Co | Expired / Lapsed | 1951-12-11 | 1955-01-04 | 1971-12-11 | 0.0 yrs | 0 | |
| US2698876A | Transmitting device for frequencyshift telegraphy | Hartford National Bank and Trust Co | Expired / Lapsed | 1953-05-07 | 1955-01-04 | 1973-05-07 | 0.0 yrs | 0 |
Showing 1 to 20 of 133 patents
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