Federal Telephone and Radio Corp
Federal TeActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2584986A | Selective wave filter | Expired / Lapsed | 1946-04-24 | 1952-02-12 | 0 | Details |
| CA450115A | Constant width synchronized pulse generator | Expired / Lapsed | — | 1948-07-27 | 0 | Details |
| US2426246A | Contacting device for electrical elements | Expired / Lapsed | 1943-07-23 | 1947-08-26 | 0 | Details |
| US2416306A | Demodulator | Expired / Lapsed | 1942-09-28 | 1947-02-25 | 0 | Details |
| US2410104A | Light directing device | Expired / Lapsed | 1942-08-27 | 1946-10-29 | 0 | Details |
| US2408041A | Instantaneous visual direction finder | Expired / Lapsed | 1941-05-22 | 1946-09-24 | 0 | Details |
| US2356094A | Method of treating selenium elements | Expired / Lapsed | 1943-02-11 | 1944-08-15 | 0 | Details |
| US2334724A | Rotary positioning control apparatus | Expired / Lapsed | 1942-12-29 | 1943-11-23 | 0 | Details |