COLONIAL RADIO Corp
COLONIAL RActive Patents
0
Total Holdings
18
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2517977A | Dynamic test apparatus for piezoelectric crystals | Expired / Lapsed | 1947-01-22 | 1950-08-08 | 0 | Details |
| US2487772A | Signal-seeking receiver for amplitude modulation and freque… | Expired / Lapsed | 1945-08-08 | 1949-11-08 | 0 | Details |
| US2478977A | Signal seeking receiver for frequency modulated signals | Expired / Lapsed | 1944-11-13 | 1949-08-16 | 0 | Details |
| US2462945A | Variable predetermined number pulse generator | Expired / Lapsed | 1944-08-14 | 1949-03-01 | 0 | Details |
| US2438962A | Protection of thyratron in impulse generating circuits | Expired / Lapsed | 1944-08-07 | 1948-04-06 | 0 | Details |
| US2432033A | Compensation for battery voltage changes in radio receivers | Expired / Lapsed | 1944-10-04 | 1947-12-02 | 0 | Details |
| US2428126A | Duplex control circuit | Expired / Lapsed | 1944-07-21 | 1947-09-30 | 0 | Details |
| US2422975A | Remote control of deflection in cathode-ray tubes | Expired / Lapsed | 1944-03-28 | 1947-06-24 | 0 | Details |
| US2411754A | Sequence tuner | Expired / Lapsed | 1945-07-04 | 1946-11-26 | 0 | Details |
| US2407399A | Duplex control circuit | Expired / Lapsed | 1944-07-24 | 1946-09-10 | 0 | Details |
| US2407394A | Self-quenched superregenerative receiver | Expired / Lapsed | 1944-06-29 | 1946-09-10 | 0 | Details |
| US2401094A | Time delay apparatus | Expired / Lapsed | 1944-06-23 | 1946-05-28 | 0 | Details |
| US2394869A | Push-button control of signal seeking receivers | Expired / Lapsed | 1944-10-05 | 1946-02-12 | 0 | Details |
| US2320124A | Radio receiver for horizontally polarized waves | Expired / Lapsed | 1941-01-18 | 1943-05-25 | 0 | Details |
| US2285769A | Sound reproducing system | Expired / Lapsed | 1941-05-09 | 1942-06-09 | 0 | Details |
| US2266670A | Oscillator-translator system | Expired / Lapsed | 1941-01-28 | 1941-12-16 | 0 | Details |
| US2230588A | Radio receiving apparatus | Expired / Lapsed | 1937-09-15 | 1941-02-04 | 0 | Details |
| US2219649A | Soldering iron | Expired / Lapsed | 1938-06-08 | 1940-10-29 | 0 | Details |