HAMMOND INSTR CO
HAMMOND INActive Patents
0
Total Holdings
21
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2645968A | Electrical musical instrument | Expired / Lapsed | 1950-06-23 | 1953-07-21 | 0 | Details |
| US2588382A | Vehicle steering control apparatus | Expired / Lapsed | 1944-07-27 | 1952-03-11 | 0 | Details |
| US2562908A | Electrical musical instrument | Expired / Lapsed | 1949-04-16 | 1951-08-07 | 0 | Details |
| US2554329A | Remote-control apparatus | Expired / Lapsed | 1944-07-20 | 1951-05-22 | 0 | Details |
| US2480132A | Electrical musical instrument | Expired / Lapsed | 1946-01-16 | 1949-08-30 | 0 | Details |
| US2480131A | Electrical musical instrument | Expired / Lapsed | 1943-11-26 | 1949-08-30 | 0 | Details |
| US2439295A | Speed responsive apparatus | Expired / Lapsed | 1945-03-10 | 1948-04-06 | 0 | Details |
| US2439294A | Steering control apparatus | Expired / Lapsed | 1943-11-27 | 1948-04-06 | 0 | Details |
| US2432152A | Electrical musical instrument | Expired / Lapsed | 1942-06-20 | 1947-12-09 | 0 | Details |
| US2382413A | Electrical musical apparatus | Expired / Lapsed | 1943-05-10 | 1945-08-14 | 0 | Details |
| US2373560A | Sound recording method and apparatus | Expired / Lapsed | 1941-07-29 | 1945-04-10 | 0 | Details |
| US2357191A | Electrical musical instrument | Expired / Lapsed | 1941-05-29 | 1944-08-29 | 0 | Details |
| US2342338A | Electrical musical instrument | Expired / Lapsed | 1942-06-20 | 1944-02-22 | 0 | Details |
| US2332076A | Electrical musical instrument | Expired / Lapsed | 1941-04-07 | 1943-10-19 | 0 | Details |
| US2310429A | Electrical musical instrument | Expired / Lapsed | 1941-09-22 | 1943-02-09 | 0 | Details |
| US2301871A | Electrical musical instrument | Expired / Lapsed | 1940-10-14 | 1942-11-10 | 0 | Details |
| US2276390A | Electrical musical instrument | Expired / Lapsed | 1940-10-14 | 1942-03-17 | 0 | Details |
| US2260412A | Key action for musical instruments | Expired / Lapsed | 1939-02-16 | 1941-10-28 | 0 | Details |
| US2253782A | Keyboard for electrical musical instruments | Expired / Lapsed | 1940-05-07 | 1941-08-26 | 0 | Details |
| US2248661A | Alternator | Expired / Lapsed | 1938-09-27 | 1941-07-08 | 0 | Details |
| US2221188A | Electrical musical instrument | Expired / Lapsed | 1938-11-17 | 1940-11-12 | 0 | Details |