Tung Sol Lamp Works Inc
Tung Sol LActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2490776A | Manufacture of sealed lighting unit | Expired / Lapsed | 1946-06-20 | 1949-12-13 | 0 | Details |
| US2463502A | Method and system of secret communication | Expired / Lapsed | 1942-05-21 | 1949-03-08 | 0 | Details |
| US2454270A | Basing electric bulb | Expired / Lapsed | 1945-04-10 | 1948-11-23 | 0 | Details |
| US2390503A | Limiter circuit for frequency modulation receivers | Expired / Lapsed | 1942-12-31 | 1945-12-11 | 0 | Details |
| US2374666A | Electronic device, circuit, and method | Expired / Lapsed | 1941-03-11 | 1945-05-01 | 0 | Details |
| US2359302A | Incandescent lamp and method of manufacture | Expired / Lapsed | 1942-06-11 | 1944-10-03 | 0 | Details |