ROBERT V FUNK
ROBERT V FActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2414194A | Method of and apparatus for locating formations in cased we… | Expired / Lapsed | 1937-03-31 | 1947-01-14 | 0 | Details |
| US2397255A | Method of and apparatus for electrically determining the fo… | Expired / Lapsed | 1936-08-04 | 1946-03-26 | 0 | Details |
| US2397254A | Method and apparatus for electrically coring in cased boreh… | Expired / Lapsed | 1935-06-28 | 1946-03-26 | 0 | Details |
| US2317039A | Method and apparatus for determining water leakages into we… | Expired / Lapsed | 1939-09-25 | 1943-04-20 | 0 | Details |
| US2297754A | Method of locating strata in wells and electrode apparatus … | Expired / Lapsed | 1936-12-28 | 1942-10-06 | 0 | Details |
| US2283429A | Method of and apparatus for determining the location of wat… | Expired / Lapsed | 1934-12-17 | 1942-05-19 | 0 | Details |
| US2228623A | Method and means for locating perforating means at producin… | Expired / Lapsed | 1940-06-25 | 1941-01-14 | 0 | Details |
| US2190260A | Apparatus for determining pressure and temperature in a well | Expired / Lapsed | 1936-01-21 | 1940-02-13 | 0 | Details |
| US2184338A | Method of and apparatus for locating water leakages into we… | Expired / Lapsed | 1936-12-16 | 1939-12-26 | 0 | Details |
| US1865847A | Method of locating the point of entry of water into oil wel… | Expired / Lapsed | 1929-06-03 | 1932-07-05 | 0 | Details |
| US1786196A | Method and apparatus for determining the location of water … | Expired / Lapsed | 1926-01-09 | 1930-12-23 | 0 | Details |