WATSON STILLMAN CO
WATSON STIActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2273516A | Injection molding machine | Expired / Lapsed | 1940-12-12 | 1942-02-17 | 0 | Details |
| US2244842A | Injection molding machine | Expired / Lapsed | 1939-01-28 | 1941-06-10 | 0 | Details |
| US2244420A | Control system for hydraulic presses | Expired / Lapsed | 1938-04-21 | 1941-06-03 | 0 | Details |
| US2227263A | Injection molding device | Expired / Lapsed | 1938-04-20 | 1940-12-31 | 0 | Details |
| US2204270A | Surge valve for hydraulic presses | Expired / Lapsed | 1938-04-29 | 1940-06-11 | 0 | Details |
| US2188076A | Extrusion press | Expired / Lapsed | 1938-09-19 | 1940-01-23 | 0 | Details |