Government of the United States of America
GovernmentActive Patents
0
Total Holdings
14
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4308145A | Relatively thick polycarbonate membranes for use in hemodia… | Expired / Lapsed | 1979-12-06 | 1981-12-29 | 17 | Details |
| US4241187A | Method and apparatus for cell and tissue culture | Expired / Lapsed | 1979-03-27 | 1980-12-23 | 3 | Details |
| US4184922A | Dual circuit, woven artificial capillary bundle for cell cu… | Expired / Lapsed | 1977-11-11 | 1980-01-22 | 4 | Details |
| US4016303A | Method of flocking blood-contacting surfaces on artificial … | Expired / Lapsed | 1975-08-06 | 1977-04-05 | 10 | Details |
| US2424390A | Switch | Expired / Lapsed | 1944-06-24 | 1947-07-22 | 0 | Details |
| US2402688A | Meteorological telemetering system | Expired / Lapsed | 1945-05-16 | 1946-06-25 | 0 | Details |
| US2400111A | Pentareflector | Expired / Lapsed | 1942-02-26 | 1946-05-14 | 0 | Details |
| US2395902A | Electronic chronoscope for measuring rates of detonation | Expired / Lapsed | 1945-02-27 | 1946-03-05 | 0 | Details |
| US2391894A | Modulator | Expired / Lapsed | 1943-12-08 | 1946-01-01 | 0 | Details |
| US2255069A | Method and apparatus for separating and concentrating gases | Expired / Lapsed | 1938-03-11 | 1941-09-09 | 0 | Details |
| US2168341A | Fishway | Expired / Lapsed | 1938-03-01 | 1939-08-08 | 0 | Details |
| US1491004A | Explosive mine | Expired / Lapsed | 1918-11-18 | 1924-04-22 | 0 | Details |
| US1474375A | Air-flask joint | Expired / Lapsed | 1920-09-10 | 1923-11-20 | 0 | Details |
| US1381158A | Bomber's training device | Expired / Lapsed | 1919-02-18 | 1921-06-14 | 0 | Details |