Patent Explorer
Browse, filter, and analyze 6 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2559659A | Pump valve | Oil Well Supply Co | Expired / Lapsed | 1949-03-07 | 1951-07-10 | 1969-03-07 | 0.0 yrs | 0 | |
| US2306739A | Locking mechanism for well drilling rotary | Oil Well Supply Co | Expired / Lapsed | 1941-04-24 | 1942-12-29 | 1961-04-24 | 0.0 yrs | 0 | |
| US2163472A | Valve | Oil Well Supply Co | Expired / Lapsed | 1936-07-07 | 1939-06-20 | 1956-07-07 | 0.0 yrs | 0 | |
| US1971713A | Pump valve | Oil Well Supply Co | Expired / Lapsed | 1929-07-30 | 1934-08-28 | 1949-07-30 | 0.0 yrs | 0 | |
| US1968200A | Pump valve | Oil Well Supply Co | Expired / Lapsed | 1929-07-26 | 1934-07-31 | 1949-07-26 | 0.0 yrs | 0 | |
| US1248881A | Oil-well packer. | Oil Well Supply Co | Expired / Lapsed | 1915-11-23 | 1917-12-04 | 1935-11-23 | 0.0 yrs | 0 |