Guiberson Corp
GuibersonActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2887347A | Swab cup | Expired / Lapsed | 1958-07-30 | 1959-05-19 | 0 | Details |
| US2749078A | Well blowout preventer | Expired / Lapsed | 1951-06-26 | 1956-06-05 | 0 | Details |
| US2401119A | Well tool | Expired / Lapsed | 1942-10-28 | 1946-05-28 | 0 | Details |
| US2392244A | Well tool | Expired / Lapsed | 1942-07-15 | 1946-01-01 | 0 | Details |
| US2305250A | Flow valve | Expired / Lapsed | 1939-02-23 | 1942-12-15 | 0 | Details |
| US2230107A | Insertable and removable flow valves | Expired / Lapsed | 1939-06-23 | 1941-01-28 | 0 | Details |
| US2204834A | Gas lift valve | Expired / Lapsed | 1936-10-08 | 1940-06-18 | 0 | Details |
| US2200758A | Rod guide | Expired / Lapsed | 1936-01-25 | 1940-05-14 | 0 | Details |
| US2144997A | Well swab | Expired / Lapsed | 1936-04-13 | 1939-01-24 | 0 | Details |
| US2144420A | Well packer | Expired / Lapsed | 1936-03-21 | 1939-01-17 | 0 | Details |
| US2035637A | Friction shoe | Expired / Lapsed | 1934-05-07 | 1936-03-31 | 0 | Details |