Patent Explorer
Browse, filter, and analyze 13 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2372087A | Boiler feed pump control | Worthington Pump and Machinery Corp | Expired / Lapsed | 1942-09-29 | 1945-03-20 | 1962-09-29 | 0.0 yrs | 0 | |
| US2365293A | Water treating apparatus | Worthington Pump and Machinery Corp | Expired / Lapsed | 1941-04-25 | 1944-12-19 | 1961-04-25 | 0.0 yrs | 0 | |
| US2254862A | Shaft seal for centrifugal machines | Worthington Pump and Machinery Corp | Expired / Lapsed | 1940-04-16 | 1941-09-02 | 1960-04-16 | 0.0 yrs | 0 | |
| US2227260A | Automatic control for high pressure pumps | Worthington Pump and Machinery Corp | Expired / Lapsed | 1938-11-17 | 1940-12-31 | 1958-11-17 | 0.0 yrs | 0 | |
| US2181978A | Variable capacity compressor | Worthington Pump and Machinery Corp | Expired / Lapsed | 1938-03-11 | 1939-12-05 | 1958-03-11 | 0.0 yrs | 0 | |
| US2174153A | Automatic check valve | Worthington Pump and Machinery Corp | Expired / Lapsed | 1937-11-13 | 1939-09-26 | 1957-11-13 | 0.0 yrs | 0 | |
| US2034272A | Control mechanism for variable volume compressors | Worthington Pump and Machinery Corp | Expired / Lapsed | 1930-08-07 | 1936-03-17 | 1950-08-07 | 0.0 yrs | 0 | |
| US1837858A | Sampler | Worthington Pump and Machinery Corp | Expired / Lapsed | 1928-02-17 | 1931-12-22 | 1948-02-17 | 0.0 yrs | 0 | |
| US1704481A | Rotary machine, particularly in centrifugal pump | Worthington Pump and Machinery Corp | Expired / Lapsed | 1926-08-17 | 1929-03-05 | 1946-08-17 | 0.0 yrs | 0 | |
| US1586978A | Centrifugal pump | Worthington Pump and Machinery Corp | Expired / Lapsed | 1921-02-03 | 1926-06-01 | 1941-02-03 | 0.0 yrs | 0 | |
| US1578498A | Pump | Worthington Pump and Machinery Corp | Expired / Lapsed | 1924-10-29 | 1926-03-30 | 1944-10-29 | 0.0 yrs | 0 | |
| US1379173A | Pump-valve | Worthington Pump and Machinery Corp | Expired / Lapsed | 1918-04-03 | 1921-05-24 | 1938-04-03 | 0.0 yrs | 0 | |
| US1185942A | Air-compressor. | Worthington Pump and Machinery Corp | Expired / Lapsed | 1915-03-04 | 1916-06-06 | 1935-03-04 | 0.0 yrs | 0 |