Patent Explorer
Browse, filter, and analyze 49 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2434897A | Stereoscopic radio location device | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-10-08 | 1948-01-27 | 1963-10-08 | 0.0 yrs | 0 | |
| US2434293A | Frequency control of an oscillator of the velocity modulation type | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-05-11 | 1948-01-13 | 1963-05-11 | 0.0 yrs | 0 | |
| US2429636A | Phase responsive apparatus | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-05-25 | 1947-10-28 | 1963-05-25 | 0.0 yrs | 0 | |
| US2429642A | Craft control apparatus | Sperry Gyroscope Co Inc | Expired / Lapsed | 1945-10-26 | 1947-10-28 | 1965-10-26 | 0.0 yrs | 0 | |
| US2429595A | Automatic landing system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-09-03 | 1947-10-28 | 1963-09-03 | 0.0 yrs | 0 | |
| US2425330A | Cathode-ray system with bright and dark marker indications | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-06-22 | 1947-08-12 | 1963-06-22 | 0.0 yrs | 0 | |
| US2425013A | Frequency control system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1944-04-07 | 1947-08-05 | 1964-04-07 | 0.0 yrs | 0 | |
| US2423337A | Radio controlled pilot system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1942-05-25 | 1947-07-01 | 1962-05-25 | 0.0 yrs | 0 | |
| US2423336A | Radio controlled pilot system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1941-02-10 | 1947-07-01 | 1961-02-10 | 0.0 yrs | 0 | |
| US2416790A | Transmission line bridge circuit | Sperry Gyroscope Co Inc | Expired / Lapsed | 1941-01-28 | 1947-03-04 | 1961-01-28 | 0.0 yrs | 0 | |
| US2415430A | Automatic pilot with automatic banking | Sperry Gyroscope Co Inc | Expired / Lapsed | 1942-07-28 | 1947-02-11 | 1962-07-28 | 0.0 yrs | 0 | |
| US2414107A | Electronic timing apparatus | Sperry Gyroscope Co Inc | Expired / Lapsed | 1944-06-30 | 1947-01-14 | 1964-06-30 | 0.0 yrs | 0 | |
| US2409648A | Bomb sight | Sperry Gyroscope Co Inc | Expired / Lapsed | 1941-01-25 | 1946-10-22 | 1961-01-25 | 0.0 yrs | 0 | |
| US2408069A | Gun positioning system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1942-05-01 | 1946-09-24 | 1962-05-01 | 0.0 yrs | 0 | |
| US2407267A | Ultra high frequency attenuator | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-03-05 | 1946-09-10 | 1963-03-05 | 0.0 yrs | 0 | |
| US2407190A | Filter for fluid flow systems | Sperry Gyroscope Co Inc | Expired / Lapsed | 1944-06-30 | 1946-09-03 | 1964-06-30 | 0.0 yrs | 0 | |
| US2398421A | Electrohydraulic control system | Sperry Gyroscope Co Inc | Expired / Lapsed | 1939-07-15 | 1946-04-16 | 1959-07-15 | 0.0 yrs | 0 | |
| US2384838A | Gyro instrument | Sperry Gyroscope Co Inc | Expired / Lapsed | 1943-03-25 | 1945-09-18 | 1963-03-25 | 0.0 yrs | 0 | |
| US2382993A | Erection device for gyro verticals | Sperry Gyroscope Co Inc | Expired / Lapsed | 1944-02-14 | 1945-08-21 | 1964-02-14 | 0.0 yrs | 0 | |
| US2377902A | Direction finder | Sperry Gyroscope Co Inc | Expired / Lapsed | 1941-10-07 | 1945-06-12 | 1961-10-07 | 0.0 yrs | 0 |
Showing 1 to 20 of 49 patents
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