International Projector Corp
InternatioActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2446937A | Echo sounding indicator | Expired / Lapsed | 1945-03-10 | 1948-08-10 | 0 | Details |
| US2307129A | Shockproof gear | Expired / Lapsed | 1940-04-05 | 1943-01-05 | 0 | Details |
| US2287965A | Method and apparatus for the operation of photoelectric cel… | Expired / Lapsed | 1940-03-16 | 1942-06-30 | 0 | Details |
| US2257551A | Method and means of producing motion pictures | Expired / Lapsed | 1938-02-26 | 1941-09-30 | 0 | Details |
| US2214901A | Power drive clutch | Expired / Lapsed | 1937-06-26 | 1940-09-17 | 0 | Details |
| US1949478A | Fly wheel mounting | Expired / Lapsed | 1931-02-28 | 1934-03-06 | 0 | Details |
| US1907754A | Tilting and adjusting device for motion picture apparatus | Expired / Lapsed | 1930-05-29 | 1933-05-09 | 0 | Details |
| US1856069A | Locking mechanism | Expired / Lapsed | 1929-08-31 | 1932-05-03 | 0 | Details |
| US1850755A | Take-up device | Expired / Lapsed | 1929-10-31 | 1932-03-22 | 0 | Details |
| US1803465A | Adjustable geneva intermittent | Expired / Lapsed | 1928-11-30 | 1931-05-05 | 0 | Details |
| US1773575A | Optical system of motion-picture-projection machines | Expired / Lapsed | 1928-10-13 | 1930-08-19 | 0 | Details |