Diamond Power Specialty Corp
Diamond PoActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2975293A | Optical defect detector | Expired / Lapsed | 1955-02-18 | 1961-03-14 | 0 | Details |
| US2825923A | Control system for soot blowers of the puff type | Expired / Lapsed | 1952-02-21 | 1958-03-11 | 0 | Details |
| US2809298A | Automatic selector system | Expired / Lapsed | 1954-02-26 | 1957-10-08 | 0 | Details |
| US2662985A | Radiation-absorption type liquid level indicator | Expired / Lapsed | 1948-09-24 | 1953-12-15 | 0 | Details |
| US2573006A | Liquid level telegauge | Expired / Lapsed | 1947-05-23 | 1951-10-30 | 0 | Details |
| US2351101A | Liquid level indicator | Expired / Lapsed | 1942-03-09 | 1944-06-13 | 0 | Details |
| US2244880A | Automatic progressive control system | Expired / Lapsed | 1939-10-26 | 1941-06-10 | 0 | Details |
| US2091303A | Indicating and control mechanism | Expired / Lapsed | 1931-03-09 | 1937-08-31 | 0 | Details |
| US2016481A | Boiler gauge glass | Expired / Lapsed | 1931-01-22 | 1935-10-08 | 0 | Details |
| US1862839A | Apparatus for separating dust from gases | Expired / Lapsed | 1929-12-02 | 1932-06-14 | 0 | Details |