Chicago Pump Co
Chicago PuActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2272469A | Centrifugal pump | Expired / Lapsed | 1939-12-23 | 1942-02-10 | 0 | Details |
| US2072944A | Aerator | Expired / Lapsed | 1934-12-21 | 1937-03-09 | 0 | Details |
| US2029765A | Pumping apparatus | Expired / Lapsed | 1934-04-07 | 1936-02-04 | 0 | Details |
| US1859436A | Seal for shafts | Expired / Lapsed | 1928-10-13 | 1932-05-24 | 0 | Details |
| US1767535A | Pump | Expired / Lapsed | 1928-04-30 | 1930-06-24 | 0 | Details |
| US1488237A | Float-actuated electric switch-operating mechanism | Expired / Lapsed | 1922-03-07 | 1924-03-25 | 0 | Details |