HYDRAULIC CONTROL ENGINEERING
HYDRAULICActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2448557A | Control valve with operating position hold | Expired / Lapsed | 1946-10-21 | 1948-09-07 | 0 | Details |
| US2436407A | Fluid-tight joint | Expired / Lapsed | 1945-01-09 | 1948-02-24 | 0 | Details |
| US2423264A | Equalizing valve | Expired / Lapsed | 1943-04-28 | 1947-07-01 | 0 | Details |
| US2377278A | Apparatus for controlling fluid pressure | Expired / Lapsed | 1941-10-31 | 1945-05-29 | 0 | Details |
| US2362854A | Rotary seal assembly | Expired / Lapsed | 1942-12-04 | 1944-11-14 | 0 | Details |
| US2362945A | Hydraulic control valve | Expired / Lapsed | 1942-06-30 | 1944-11-14 | 0 | Details |
| US2359802A | Hollow plunger control valve | Expired / Lapsed | 1943-08-21 | 1944-10-10 | 0 | Details |
| US2244212A | Unloading valve mechanism | Expired / Lapsed | 1939-01-12 | 1941-06-03 | 0 | Details |