Stone J and Co Ltd
Stone J anActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3122316A | Plural stage temperature control | Expired / Lapsed | 1961-04-20 | 1964-02-25 | 2 | Details |
| US2472545A | Apparatus for testing voltage regulators | Expired / Lapsed | 1944-11-24 | 1949-06-07 | 0 | Details |
| US2373591A | Electric regulator of the carbon pile type | Expired / Lapsed | 1942-05-16 | 1945-04-10 | 0 | Details |
| US1844822A | Refrigerator plant | Expired / Lapsed | 1929-07-08 | 1932-02-09 | 0 | Details |
| US1577531A | Method of enameling pipes | Expired / Lapsed | 1925-05-29 | 1926-03-23 | 0 | Details |
| US855892A | Means for operating the valves of motive-power engines. | Expired / Lapsed | 1905-09-18 | 1907-06-04 | 0 | Details |