Pioneer Instrument Co Inc
Pioneer InActive Patents
0
Total Holdings
11
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2127823A | Ice warning device | Expired / Lapsed | 1935-12-14 | 1938-08-23 | 0 | Details |
| US2089987A | Means for operating a repeating device | Expired / Lapsed | 1930-05-08 | 1937-08-17 | 0 | Details |
| US2053409A | Means for repeating angular movements | Expired / Lapsed | 1930-08-15 | 1936-09-08 | 0 | Details |
| US1976270A | Means for illuminating dials of instruments | Expired / Lapsed | 1929-03-26 | 1934-10-09 | 0 | Details |
| US1935740A | Aeroplane instrument | Expired / Lapsed | 1930-12-01 | 1933-11-21 | 0 | Details |
| US1935736A | Indicating instrument | Expired / Lapsed | 1930-05-10 | 1933-11-21 | 0 | Details |
| US1932329A | Electrical apparatus | Expired / Lapsed | 1930-07-24 | 1933-10-24 | 0 | Details |
| US1929091A | Rate of climb instruments | Expired / Lapsed | 1929-07-31 | 1933-10-03 | 0 | Details |
| US1910093A | Navigation calculator | Expired / Lapsed | 1924-05-12 | 1933-05-23 | 0 | Details |
| US1873684A | Compass | Expired / Lapsed | 1929-05-11 | 1932-08-23 | 0 | Details |
| US1834017A | Optical instrument | Expired / Lapsed | 1928-12-18 | 1931-12-01 | 0 | Details |