CG Conn Ltd
CG Conn LtActive Patents
0
Total Holdings
9
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2612812A | Keyboard construction | Expired / Lapsed | 1949-02-01 | 1952-10-07 | 0 | Details |
| US2476607A | Tone frequency oscillator | Expired / Lapsed | 1946-09-25 | 1949-07-19 | 0 | Details |
| US2468601A | Head for magnetic recording machines | Expired / Lapsed | 1945-12-28 | 1949-04-26 | 0 | Details |
| US2423194A | Apparatus for measuring the dwell and frequency of electric… | Expired / Lapsed | 1943-04-16 | 1947-07-01 | 0 | Details |
| US2405430A | Apparatus for analyzing rotational unbalances | Expired / Lapsed | 1943-03-25 | 1946-08-06 | 0 | Details |
| US2401632A | Magazine for magnetic recording apparatus | Expired / Lapsed | 1945-04-18 | 1946-06-04 | 0 | Details |
| US2398097A | Phase modulation method and apparatus | Expired / Lapsed | 1943-07-17 | 1946-04-09 | 0 | Details |
| US2328539A | Electromagnetic recorder | Expired / Lapsed | 1941-01-24 | 1943-09-07 | 0 | Details |
| US1837227A | Tuning device for musical instruments | Expired / Lapsed | 1930-05-17 | 1931-12-22 | 0 | Details |