Research Corp
Research CActive Patents
0
Total Holdings
13
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4011601A | Prosthetic heart valve | Expired / Lapsed | 1975-10-14 | 1977-03-15 | 9 | Details |
| US3790507A | Plastic bone composition | Expired / Lapsed | 1970-07-06 | 1974-02-05 | 0 | Details |
| US3567028A | Membrane envelope assembly | Expired / Lapsed | 1968-12-26 | 1971-03-02 | 9 | Details |
| US3477436A | Method of accelerating wound healing by use of interacting … | Expired / Lapsed | 1966-03-11 | 1969-11-11 | 0 | Details |
| US3018956A | Computing apparatus | Expired / Lapsed | 1957-12-03 | 1962-01-30 | 0 | Details |
| US3011711A | Cryogenic computing devices | Expired / Lapsed | 1957-04-03 | 1961-12-05 | 0 | Details |
| US2944542A | Detecting and recording physiological changes accompanying … | Expired / Lapsed | 1955-10-03 | 1960-07-12 | 0 | Details |
| US2752792A | Gyroscopic apparatus | Expired / Lapsed | 1951-03-22 | 1956-07-03 | 0 | Details |
| US2498882A | Impulse stimulating apparatus | Expired / Lapsed | 1946-06-20 | 1950-02-28 | 0 | Details |
| US2281552A | Electric communication | Expired / Lapsed | 1938-10-31 | 1942-05-05 | 0 | Details |
| US2275675A | Detonation detector system | Expired / Lapsed | 1938-05-13 | 1942-03-10 | 0 | Details |
| US2266638A | Flexible body | Expired / Lapsed | 1939-02-18 | 1941-12-16 | 0 | Details |
| US2189122A | Method of and apparatus for sensing radiant energy | Expired / Lapsed | 1938-05-18 | 1940-02-06 | 0 | Details |