Patent Explorer
Browse, filter, and analyze 17 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB657047A | Improvements in or relating to cathode-ray tube display systems | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1947-04-03 | — | 1967-04-03 | 0.0 yrs | 0 | |
| US2730573A | Feed-back amplifier systems and servo mechanisms that are adapted to respond to input changes at very low frequencies | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1949-11-30 | 1956-01-10 | 1969-11-30 | 0.0 yrs | 0 | |
| US2488286A | Automatic control system for dirigible craft | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1946-02-23 | 1949-11-15 | 1966-02-23 | 0.0 yrs | 0 | |
| US2442748A | Gun sight training device | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1944-10-28 | 1948-06-08 | 1964-10-28 | 0.0 yrs | 0 | |
| US2440183A | Automatic regulating system having a movable control element and a follow-up element | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1944-02-19 | 1948-04-20 | 1964-02-19 | 0.0 yrs | 0 | |
| US2439750A | Automatic control system for aircraft | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1942-09-17 | 1948-04-13 | 1962-09-17 | 0.0 yrs | 0 | |
| US2396951A | Combined manual and automatic control means for aircraft | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1942-10-15 | 1946-03-19 | 1962-10-15 | 0.0 yrs | 0 | |
| US2394384A | Dual control system | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1942-12-15 | 1946-02-05 | 1962-12-15 | 0.0 yrs | 0 | |
| US2345744A | Apparatus for training bomb aimers | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1942-12-15 | 1944-04-04 | 1962-12-15 | 0.0 yrs | 0 | |
| US1788412A | Oil engine | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1922-01-24 | 1931-01-13 | 1942-01-24 | 0.0 yrs | 0 | |
| US1686525A | Searchlight shutter | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1924-09-03 | 1928-10-09 | 1944-09-03 | 0.0 yrs | 0 | |
| US1677305A | Two-cycle supercharging combustion engine | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1924-10-07 | 1928-07-17 | 1944-10-07 | 0.0 yrs | 0 | |
| US1638417A | Ship's signaling or broadcasting device | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1923-11-06 | 1927-08-09 | 1943-11-06 | 0.0 yrs | 0 | |
| US1629314A | Radial bearing | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1921-12-08 | 1927-05-17 | 1941-12-08 | 0.0 yrs | 0 | |
| US1605571A | Repeater motor | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1920-12-03 | 1926-11-02 | 1940-12-03 | 0.0 yrs | 0 | |
| US1587806A | Feeding and rotating means for electrodes | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1918-03-26 | 1926-06-08 | 1938-03-26 | 0.0 yrs | 0 | |
| US1503436A | Vertical gyroscopic compass | Sperry Gyroscope Co Ltd | Expired / Lapsed | 1918-06-05 | 1924-07-29 | 1938-06-05 | 0.0 yrs | 0 |