Vetco Gray LLC
Vetco GrayActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3710860A | Petroleum well safety valve | Expired / Lapsed | 1971-07-30 | 1973-01-16 | 36 | Details |
| US3405956A | Apparatus for mechanically keying parts to one another | Expired / Lapsed | 1966-03-22 | 1968-10-15 | 0 | Details |
| US2485497A | Wellhead equipment | Expired / Lapsed | 1944-12-26 | 1949-10-18 | 0 | Details |
| US2277380A | Apparatus for producing wells | Expired / Lapsed | 1939-11-30 | 1942-03-24 | 0 | Details |
| US2241288A | Apparatus for completing wells | Expired / Lapsed | 1940-01-26 | 1941-05-06 | 0 | Details |
| US2207469A | Casing hanger | Expired / Lapsed | 1939-01-04 | 1940-07-09 | 0 | Details |
| US2150887A | Method and apparatus for completing wells | Expired / Lapsed | 1936-01-13 | 1939-03-14 | 0 | Details |
| US2148327A | Oil well completion apparatus | Expired / Lapsed | 1937-12-14 | 1939-02-21 | 0 | Details |