POWER PATENTS CO
POWER PATEActive Patents
0
Total Holdings
7
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2211627A | Gas analyzing apparatus | Expired / Lapsed | 1937-04-16 | 1940-08-13 | 0 | Details |
| US2206849A | Spark coil testing | Expired / Lapsed | 1938-11-08 | 1940-07-02 | 0 | Details |
| US2155674A | Brake testing | Expired / Lapsed | 1936-09-15 | 1939-04-25 | 0 | Details |
| US2147399A | Process for cracking hydrocarbons | Expired / Lapsed | 1934-10-23 | 1939-02-14 | 0 | Details |
| US2109692A | Manufacture of sulphurized hydrocarbons | Expired / Lapsed | 1936-02-10 | 1938-03-01 | 0 | Details |
| US2108778A | Electric toaster | Expired / Lapsed | 1936-09-17 | 1938-02-15 | 0 | Details |
| US2102371A | Impulse rate meter | Expired / Lapsed | 1936-06-04 | 1937-12-14 | 0 | Details |