Mackay Radio & Telegraph Co
Mackay RadActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2855506A | Automatic frequency control circuit for frequency shift rad… | Expired / Lapsed | 1956-02-29 | 1958-10-07 | 0 | Details |
| US2834003A | Signal selector device | Expired / Lapsed | 1954-03-18 | 1958-05-06 | 0 | Details |
| US2678390A | Electronic timing relay | Expired / Lapsed | 1951-10-31 | 1954-05-11 | 0 | Details |
| US2405174A | Transmission control network | Expired / Lapsed | 1942-05-27 | 1946-08-06 | 0 | Details |
| US2287220A | Transmitting antenna | Expired / Lapsed | 1941-04-09 | 1942-06-23 | 0 | Details |
| US2256539A | Altimeter | Expired / Lapsed | 1939-10-19 | 1941-09-23 | 0 | Details |
| US2256538A | Phase shifting device and circuits incorporating the same | Expired / Lapsed | 1939-10-10 | 1941-09-23 | 0 | Details |
| US2238438A | Electrical network | Expired / Lapsed | 1935-03-22 | 1941-04-15 | 0 | Details |
| US2159648A | Transmission modifying network | Expired / Lapsed | 1937-09-08 | 1939-05-23 | 0 | Details |
| US2147809A | High frequency bridge circuits and high frequency repeaters | Expired / Lapsed | 1937-05-04 | 1939-02-21 | 0 | Details |