Patent Explorer
Browse, filter, and analyze 7 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2422806A | Drill bit pressure gauge | Stanolind Oil and Gas Co | Expired / Lapsed | 1944-04-28 | 1947-06-24 | 1964-04-28 | 0.0 yrs | 0 | |
| US2337231A | Nondestructive testing method and apparatus | Stanolind Oil and Gas Co | Expired / Lapsed | 1942-01-22 | 1943-12-21 | 1962-01-22 | 0.0 yrs | 0 | |
| US2332873A | Differential radioactivity logging | Stanolind Oil and Gas Co | Expired / Lapsed | 1942-04-25 | 1943-10-26 | 1962-04-25 | 0.0 yrs | 0 | |
| US2291692A | Magnetic logging | Stanolind Oil and Gas Co | Expired / Lapsed | 1938-06-02 | 1942-08-04 | 1958-06-02 | 0.0 yrs | 0 | |
| US2275735A | Method and apparatus for determining distances of elastic discontinuities | Stanolind Oil and Gas Co | Expired / Lapsed | 1939-06-23 | 1942-03-10 | 1959-06-23 | 0.0 yrs | 0 | |
| US2235089A | Modulated steady state reflection seismic surveying | Stanolind Oil and Gas Co | Expired / Lapsed | 1939-01-14 | 1941-03-18 | 1959-01-14 | 0.0 yrs | 0 | |
| US2233973A | Slow setting cement | Stanolind Oil and Gas Co | Expired / Lapsed | 1939-06-22 | 1941-03-04 | 1959-06-22 | 0.0 yrs | 0 |