Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2459512A | Petroleum exploration by soil analysis | RALPH H FASH | Expired / Lapsed | 1944-11-06 | 1949-01-18 | 1964-11-06 | 0.0 yrs | 0 | |
| US2361261A | Method of detecting the penetration of an oil-bearing horizon | RALPH H FASH | Expired / Lapsed | 1940-10-09 | 1944-10-24 | 1960-10-09 | 0.0 yrs | 0 | |
| US2311151A | Analysis of soil samples for determining oil content | RALPH H FASH | Expired / Lapsed | 1940-05-10 | 1943-02-16 | 1960-05-10 | 0.0 yrs | 0 | |
| US2297939A | Method of detecting the penetration of an oil-bearing horizon | RALPH H FASH | Expired / Lapsed | 1940-10-09 | 1942-10-06 | 1960-10-09 | 0.0 yrs | 0 |