WALWORTH PATENTS Inc
WALWORTH PActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2406957A | Handwheel attaching means | Expired / Lapsed | 1944-08-08 | 1946-09-03 | 0 | Details |
| US2352140A | Power-operated valve | Expired / Lapsed | 1942-03-28 | 1944-06-20 | 0 | Details |
| US2342422A | High pressure joint | Expired / Lapsed | 1942-05-05 | 1944-02-22 | 0 | Details |
| US2265526A | Lubricating device | Expired / Lapsed | 1939-04-01 | 1941-12-09 | 0 | Details |
| US2175867A | Valve | Expired / Lapsed | 1937-01-15 | 1939-10-10 | 0 | Details |
| US1931918A | Check valve | Expired / Lapsed | 1926-08-20 | 1933-10-24 | 0 | Details |