HPM Development Corp
HPM DeveloActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2618121A | Locking control circuit for fluid-actuated motors | Expired / Lapsed | 1949-11-07 | 1952-11-18 | 0 | Details |
| US2581290A | Surge valve | Expired / Lapsed | 1947-07-08 | 1952-01-01 | 0 | Details |
| US2485523A | Hydraulic injection of plastics as a continuous strip | Expired / Lapsed | 1943-07-21 | 1949-10-18 | 0 | Details |
| US2478818A | Method of manufacturing pressure cylinders | Expired / Lapsed | 1945-08-11 | 1949-08-09 | 0 | Details |
| US2477258A | Turret injection machine | Expired / Lapsed | 1944-07-01 | 1949-07-26 | 0 | Details |
| US2459902A | Hydraulic operating circuit for machine tools | Expired / Lapsed | 1947-02-20 | 1949-01-25 | 0 | Details |
| US2443312A | Pressure cylinder | Expired / Lapsed | 1944-03-06 | 1948-06-15 | 0 | Details |