Hughes Henry and Son Ltd
Hughes HenActive Patents
0
Total Holdings
13
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB616794A | Improvements in and relating to means for measuring the dis… | Expired / Lapsed | 1945-07-11 | — | 0 | Details |
| US2544204A | Radar responder beacon | Expired / Lapsed | 1949-08-03 | 1951-03-06 | 0 | Details |
| US2501479A | Mounting of stabilized platforms on moving vehicles | Expired / Lapsed | 1945-08-17 | 1950-03-21 | 0 | Details |
| US2435276A | Magnetic field indicating means | Expired / Lapsed | 1943-08-14 | 1948-02-03 | 0 | Details |
| US2434057A | Means for indicating the angular displacements of a shaft a… | Expired / Lapsed | 1946-02-26 | 1948-01-06 | 0 | Details |
| US2350080A | Compressional wave indicator | Expired / Lapsed | 1938-11-26 | 1944-05-30 | 0 | Details |
| US2335117A | Magnetic surveying apparatus | Expired / Lapsed | 1940-07-23 | 1943-11-23 | 0 | Details |
| US2309956A | Apparatus for depth measurement | Expired / Lapsed | 1940-04-16 | 1943-02-02 | 0 | Details |
| US2198171A | Recording device | Expired / Lapsed | 1935-11-29 | 1940-04-23 | 0 | Details |
| US2173316A | Indicating instrument | Expired / Lapsed | 1937-06-30 | 1939-09-19 | 0 | Details |
| US2167492A | Method of echo sounding and means therefor | Expired / Lapsed | 1935-12-14 | 1939-07-25 | 0 | Details |
| US2084845A | Echo sounding apparatus | Expired / Lapsed | 1934-08-06 | 1937-06-22 | 0 | Details |
| US2076330A | Measurement of distances by echo reception methods | Expired / Lapsed | 1932-01-26 | 1937-04-06 | 0 | Details |