S Smith and Sons Ltd
S Smith anActive Patents
0
Total Holdings
27
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB516567A | Improvements in radio navigational systems for aircraft or … | Expired / Lapsed | 1938-05-25 | — | 0 | Details |
| US3447852A | Scanning apparatus | Expired / Lapsed | 1965-12-21 | 1969-06-03 | 0 | Details |
| US3361897A | Digital apparatus to correct for attitude errors in aircraf… | Expired / Lapsed | 1964-04-29 | 1968-01-02 | 0 | Details |
| US3259800A | Electric signal generating apparatus | Expired / Lapsed | 1963-03-18 | 1966-07-05 | 1 | Details |
| US3190084A | Flexible drive shaft assembly | Expired / Lapsed | 1963-02-26 | 1965-06-22 | 2 | Details |
| US3174127A | Echo sounding | Expired / Lapsed | 1961-05-12 | 1965-03-16 | 1 | Details |
| US3159738A | Aircraft ground run predictors | Expired / Lapsed | 1961-05-12 | 1964-12-01 | 2 | Details |
| US3143943A | Processing of photographic material | Expired / Lapsed | 1960-05-10 | 1964-08-11 | 2 | Details |
| US3119091A | Echo-ranging and the like | Expired / Lapsed | 1956-01-23 | 1964-01-21 | 2 | Details |
| US3071336A | Actuating devices for control surfaces of moving craft | Expired / Lapsed | 1959-08-17 | 1963-01-01 | 1 | Details |
| US3070761A | Ultrasonic delay lines | Expired / Lapsed | 1961-05-16 | 1962-12-25 | 0 | Details |
| US3050988A | Ultrasonic testing | Expired / Lapsed | 1959-02-13 | 1962-08-28 | 0 | Details |
| US2762962A | Safety device for automatic pilot system | Expired / Lapsed | 1951-06-20 | 1956-09-11 | 0 | Details |
| US2651015A | Electric aircraft control apparatus | Expired / Lapsed | 1950-02-24 | 1953-09-01 | 0 | Details |
| US2649563A | Stabilizing apparatus in aircraft | Expired / Lapsed | 1948-06-01 | 1953-08-18 | 0 | Details |
| US2620463A | Automatic control system | Expired / Lapsed | 1948-06-11 | 1952-12-02 | 0 | Details |
| US2546555A | Automatic control and indicating system for crafts | Expired / Lapsed | 1947-02-25 | 1951-03-27 | 0 | Details |
| US2503346A | Automatic stabilizing control system | Expired / Lapsed | 1947-10-21 | 1950-04-11 | 0 | Details |
| US2357524A | Electric ratiometer | Expired / Lapsed | 1942-04-09 | 1944-09-05 | 0 | Details |
| US2346857A | Fluid-actuated servomotor system | Expired / Lapsed | 1941-06-09 | 1944-04-18 | 0 | Details |
| US2325018A | Pneumatic pressure head | Expired / Lapsed | 1941-07-17 | 1943-07-20 | 0 | Details |
| US2324224A | Locating and fastening means | Expired / Lapsed | 1941-05-31 | 1943-07-13 | 0 | Details |
| US2319011A | Resilient diaphragm pressure operated device | Expired / Lapsed | 1941-09-17 | 1943-05-11 | 0 | Details |
| US2307941A | Automatic control apparatus for aircraft | Expired / Lapsed | 1939-07-07 | 1943-01-12 | 0 | Details |
| US2295111A | Manufacture of tubular valve members | Expired / Lapsed | 1941-07-10 | 1942-09-08 | 0 | Details |
| US2288102A | Radio direction finding apparatus | Expired / Lapsed | 1940-03-01 | 1942-06-30 | 0 | Details |
| US2286561A | Automatic control apparatus for aircraft | Expired / Lapsed | 1939-07-07 | 1942-06-16 | 0 | Details |