Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2401119A | Well tool | Guiberson Corp | Expired / Lapsed | 1942-10-28 | 1946-05-28 | 1962-10-28 | 0.0 yrs | 0 | |
| US2392244A | Well tool | Guiberson Corp | Expired / Lapsed | 1942-07-15 | 1946-01-01 | 1962-07-15 | 0.0 yrs | 0 | |
| US2230107A | Insertable and removable flow valves | Guiberson Corp | Expired / Lapsed | 1939-06-23 | 1941-01-28 | 1959-06-23 | 0.0 yrs | 0 | |
| US2144997A | Well swab | Guiberson Corp | Expired / Lapsed | 1936-04-13 | 1939-01-24 | 1956-04-13 | 0.0 yrs | 0 |