Sperry Gyroscope Co Ltd
Sperry GyrActive Patents
0
Total Holdings
33
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB657047A | Improvements in or relating to cathode-ray tube display sys… | Expired / Lapsed | 1947-04-03 | — | 0 | Details |
| GB489271A | Improvements in servomotor systems for effecting position c… | Expired / Lapsed | 1936-10-22 | — | 0 | Details |
| US3121685A | Filter | Expired / Lapsed | 1960-12-12 | 1964-02-18 | 2 | Details |
| US2730573A | Feed-back amplifier systems and servo mechanisms that are a… | Expired / Lapsed | 1949-11-30 | 1956-01-10 | 0 | Details |
| US2529876A | Generator for electrical oscillations | Expired / Lapsed | 1948-12-14 | 1950-11-14 | 0 | Details |
| US2488286A | Automatic control system for dirigible craft | Expired / Lapsed | 1946-02-23 | 1949-11-15 | 0 | Details |
| US2442748A | Gun sight training device | Expired / Lapsed | 1944-10-28 | 1948-06-08 | 0 | Details |
| US2440183A | Automatic regulating system having a movable control elemen… | Expired / Lapsed | 1944-02-19 | 1948-04-20 | 0 | Details |
| US2439750A | Automatic control system for aircraft | Expired / Lapsed | 1942-09-17 | 1948-04-13 | 0 | Details |
| US2396951A | Combined manual and automatic control means for aircraft | Expired / Lapsed | 1942-10-15 | 1946-03-19 | 0 | Details |
| US2394384A | Dual control system | Expired / Lapsed | 1942-12-15 | 1946-02-05 | 0 | Details |
| US2384484A | Aircraft flight indicator and system | Expired / Lapsed | 1941-02-08 | 1945-09-11 | 0 | Details |
| US2345744A | Apparatus for training bomb aimers | Expired / Lapsed | 1942-12-15 | 1944-04-04 | 0 | Details |
| US1788412A | Oil engine | Expired / Lapsed | 1922-01-24 | 1931-01-13 | 0 | Details |
| US1686525A | Searchlight shutter | Expired / Lapsed | 1924-09-03 | 1928-10-09 | 0 | Details |
| US1685762A | Latitude indicator | Expired / Lapsed | 1925-06-27 | 1928-09-25 | 0 | Details |
| US1677305A | Two-cycle supercharging combustion engine | Expired / Lapsed | 1924-10-07 | 1928-07-17 | 0 | Details |
| US1673369A | Ship's signaling or broadcasting device | Expired / Lapsed | 1923-11-14 | 1928-06-12 | 0 | Details |
| US1670641A | Mechanically-piloted dirigible device | Expired / Lapsed | 1918-04-18 | 1928-05-22 | 0 | Details |
| US1638417A | Ship's signaling or broadcasting device | Expired / Lapsed | 1923-11-06 | 1927-08-09 | 0 | Details |
| US1629314A | Radial bearing | Expired / Lapsed | 1921-12-08 | 1927-05-17 | 0 | Details |
| US1617310A | Repeater compass | Expired / Lapsed | 1920-10-12 | 1927-02-08 | 0 | Details |
| US1605571A | Repeater motor | Expired / Lapsed | 1920-12-03 | 1926-11-02 | 0 | Details |
| US1587806A | Feeding and rotating means for electrodes | Expired / Lapsed | 1918-03-26 | 1926-06-08 | 0 | Details |
| US1560435A | Apparatus for testing gyroscopic compasses | Expired / Lapsed | 1919-09-19 | 1925-11-03 | 0 | Details |
| US1525541A | Shutter for searchlights | Expired / Lapsed | 1918-01-10 | 1925-02-10 | 0 | Details |
| US1503436A | Vertical gyroscopic compass | Expired / Lapsed | 1918-06-05 | 1924-07-29 | 0 | Details |
| US1424804A | Jewel support for compasses | Expired / Lapsed | 1917-07-23 | 1922-08-08 | 0 | Details |
| FR538534A | Improvements to power transmission devices | Expired / Lapsed | 1921-07-20 | 1922-06-10 | 0 | Details |
| US1391652A | Electrical transmission system | Expired / Lapsed | 1917-10-03 | 1921-09-20 | 0 | Details |
| US1374162A | Testing-stand for gyroscopes | Expired / Lapsed | 1915-10-06 | 1921-04-05 | 0 | Details |
| US1360694A | Navigational apparatus | Expired / Lapsed | 1914-11-13 | 1920-11-30 | 0 | Details |
| US1293747A | Battle-tracer. | Expired / Lapsed | 1914-08-04 | 1919-02-11 | 0 | Details |