Philco Radio and Television Corp
Philco RadActive Patents
0
Total Holdings
33
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2405277A | Tuning apparatus | Expired / Lapsed | 1943-12-02 | 1946-08-06 | 0 | Details |
| US2398050A | Vacuum tube system | Expired / Lapsed | 1945-02-02 | 1946-04-09 | 0 | Details |
| US2393238A | Refrigerator | Expired / Lapsed | 1944-02-26 | 1946-01-22 | 0 | Details |
| US2392727A | Refrigerator assembly | Expired / Lapsed | 1944-01-12 | 1946-01-08 | 0 | Details |
| US2388567A | Portable radio receiver | Expired / Lapsed | 1943-01-28 | 1945-11-06 | 0 | Details |
| US2378875A | Cathode ray television tube | Expired / Lapsed | 1942-03-30 | 1945-06-19 | 0 | Details |
| US2357237A | Remote control system for radio receivers and the like | Expired / Lapsed | 1938-07-20 | 1944-08-29 | 0 | Details |
| US2356140A | Automatic gain control and amplitude selection device | Expired / Lapsed | 1942-07-31 | 1944-08-22 | 0 | Details |
| US2335205A | Supporting means for radio coil units and the like | Expired / Lapsed | 1941-10-16 | 1943-11-23 | 0 | Details |
| US2330902A | Detector and automatic volume control circuit for frequency… | Expired / Lapsed | 1941-10-17 | 1943-10-05 | 0 | Details |
| US2322621A | Electroacoustic transducer | Expired / Lapsed | 1941-10-02 | 1943-06-22 | 0 | Details |
| US2312181A | Multiple tube socket structure | Expired / Lapsed | 1941-11-13 | 1943-02-23 | 0 | Details |
| US2294341A | Synchronizing circuit and the like | Expired / Lapsed | 1940-05-31 | 1942-08-25 | 0 | Details |
| US2290084A | Degenerative feedback circuit | Expired / Lapsed | 1937-07-24 | 1942-07-14 | 0 | Details |
| US2288554A | Synchronizing system and method | Expired / Lapsed | 1940-05-24 | 1942-06-30 | 0 | Details |
| US2281395A | Noise limiting circuits | Expired / Lapsed | 1939-07-27 | 1942-04-28 | 0 | Details |
| US2277000A | Synchronizing system | Expired / Lapsed | 1940-09-17 | 1942-03-17 | 0 | Details |
| US2273934A | Noise limiting device | Expired / Lapsed | 1939-04-22 | 1942-02-24 | 0 | Details |
| US2273978A | Control circuit for gas triodes | Expired / Lapsed | 1939-03-31 | 1942-02-24 | 0 | Details |
| US2274586A | Cathode ray tube | Expired / Lapsed | 1939-02-25 | 1942-02-24 | 0 | Details |
| US2265883A | Signal amplitude limiting circuit | Expired / Lapsed | 1938-07-16 | 1941-12-09 | 0 | Details |
| US2250371A | Wireless remote control system for radio-phonograph combina… | Expired / Lapsed | 1940-01-03 | 1941-07-22 | 0 | Details |
| US2240606A | Electron beam deflecting yoke | Expired / Lapsed | 1939-10-21 | 1941-05-06 | 0 | Details |
| US2240600A | Automatic gain control system | Expired / Lapsed | 1938-07-16 | 1941-05-06 | 0 | Details |
| US2240420A | Electrical system | Expired / Lapsed | 1939-05-11 | 1941-04-29 | 0 | Details |
| US2240422A | Synchronizing circuit | Expired / Lapsed | 1939-05-04 | 1941-04-29 | 0 | Details |
| US2240428A | Electrical circuits | Expired / Lapsed | 1936-07-31 | 1941-04-29 | 0 | Details |
| US2236705A | Composite signal device | Expired / Lapsed | 1935-06-17 | 1941-04-01 | 0 | Details |
| US2233317A | Amplifier for television system | Expired / Lapsed | 1937-05-25 | 1941-02-25 | 0 | Details |
| US2231792A | Synchronizing system and method | Expired / Lapsed | 1938-08-12 | 1941-02-11 | 0 | Details |
| US2230926A | Timing signal circuits | Expired / Lapsed | 1939-04-13 | 1941-02-04 | 0 | Details |
| US2171536A | Electrical system | Expired / Lapsed | 1935-11-23 | 1939-09-05 | 0 | Details |
| US2141343A | Electrical system | Expired / Lapsed | 1935-06-07 | 1938-12-27 | 0 | Details |