Copeman Laboratories Co
Copeman LaActive Patents
0
Total Holdings
8
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2627423A | Tractor hitch | Expired / Lapsed | 1949-04-23 | 1953-02-03 | 0 | Details |
| US2348740A | Diaphragm and method of forming same | Expired / Lapsed | 1938-01-29 | 1944-05-16 | 0 | Details |
| US2346029A | Plant watering apparatus | Expired / Lapsed | 1937-12-18 | 1944-04-04 | 0 | Details |
| US2220958A | Tensioned yarn and thread and method of forming same | Expired / Lapsed | 1935-05-13 | 1940-11-12 | 0 | Details |
| US2134908A | Package structure | Expired / Lapsed | 1935-12-23 | 1938-11-01 | 0 | Details |
| US2075178A | Dispensing device for sheet rubber deposited from an aqueou… | Expired / Lapsed | 1934-12-03 | 1937-03-30 | 0 | Details |
| US1902016A | Refrigerating apparatus | Expired / Lapsed | 1932-02-12 | 1933-03-21 | 0 | Details |
| US1786827A | Method and apparatus for positioning and sealing ice-cream … | Expired / Lapsed | 1928-12-10 | 1930-12-30 | 0 | Details |