Eastman Oil Well Survey Co
Eastman OiActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3215204A | Whipstock engaging and releasing device | Expired / Lapsed | 1961-10-16 | 1965-11-02 | 4 | Details |
| US2656613A | Apparatus for calipering well bores | Expired / Lapsed | 1948-04-17 | 1953-10-27 | 0 | Details |
| US2649715A | Temperature measuring and indicating apparatus | Expired / Lapsed | 1947-05-08 | 1953-08-25 | 0 | Details |
| US2631270A | Method of and apparatus for the measurement of distance or … | Expired / Lapsed | 1947-05-19 | 1953-03-10 | 0 | Details |
| US2503115A | Combination reaming and cementing apparatus and method of f… | Expired / Lapsed | 1945-03-26 | 1950-04-04 | 0 | Details |
| US2489566A | Core orienting apparatus | Expired / Lapsed | 1945-11-27 | 1949-11-29 | 0 | Details |
| US2364908A | Compass unit | Expired / Lapsed | 1942-03-06 | 1944-12-12 | 0 | Details |
| US2317632A | Means for surveying well bores | Expired / Lapsed | 1939-07-20 | 1943-04-27 | 0 | Details |
| US2313168A | Inclination and directional device for boreholes | Expired / Lapsed | 1940-04-25 | 1943-03-09 | 0 | Details |
| US2265982A | Directional drill bit | Expired / Lapsed | 1939-11-06 | 1941-12-16 | 0 | Details |