Patent Explorer
Browse, filter, and analyze 26 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB769305A | Improvements relating to message selection in electrical communication or control systems | EMI Ltd | Expired / Lapsed | 1953-08-06 | — | 1973-08-06 | 0.0 yrs | 0 | |
| US3390380A | Binary-information analysing arrangements | EMI Ltd | Expired / Lapsed | 1965-08-18 | 1968-06-25 | 1985-08-18 | 0.0 yrs | 0 | |
| US3086154A | Automatic control of machine tools | EMI Ltd | Expired / Lapsed | 1958-02-27 | 1963-04-16 | 1978-02-27 | 0.0 yrs | 1 | |
| US2961161A | Control devices for automatic machine tools | EMI Ltd | Expired / Lapsed | 1957-07-15 | 1960-11-22 | 1977-07-15 | 0.0 yrs | 0 | |
| US2929555A | Automatic control mechanism and interpolating devices therefor | EMI Ltd | Expired / Lapsed | 1956-04-27 | 1960-03-22 | 1976-04-27 | 0.0 yrs | 0 | |
| US2900586A | Displacement error reducing pattern servosystem | EMI Ltd | Expired / Lapsed | 1957-07-17 | 1959-08-18 | 1977-07-17 | 0.0 yrs | 0 | |
| US2883110A | Computing mechanism especially for controlling automatic machine tools | EMI Ltd | Expired / Lapsed | 1956-10-25 | 1959-04-21 | 1976-10-25 | 0.0 yrs | 0 | |
| US2757233A | Electron discharge tube arrangements | EMI Ltd | Expired / Lapsed | 1951-09-29 | 1956-07-31 | 1971-09-29 | 0.0 yrs | 0 | |
| FR1114501A | Improvements to automatic control systems, especially applicable to machine tools | EMI Ltd | Expired / Lapsed | 1954-10-28 | 1956-04-13 | 1974-10-28 | 0.0 yrs | 0 | |
| US2738379A | Color television apparatus | EMI Ltd | Expired / Lapsed | 1951-12-19 | 1956-03-13 | 1971-12-19 | 0.0 yrs | 0 | |
| FR1110544A | Improvements to automatic control systems intended in particular for machine tools | EMI Ltd | Expired / Lapsed | 1954-10-21 | 1956-02-14 | 1974-10-21 | 0.0 yrs | 0 | |
| US2621292A | Electrical integrating circuit arrangement | EMI Ltd | Expired / Lapsed | 1948-02-10 | 1952-12-09 | 1968-02-10 | 0.0 yrs | 0 | |
| US2534846A | Color filter | EMI Ltd | Expired / Lapsed | 1947-09-08 | 1950-12-19 | 1967-09-08 | 0.0 yrs | 0 | |
| US2501368A | Frequency stabilized relay for frequency-modulated oscillations | EMI Ltd | Expired / Lapsed | 1945-03-03 | 1950-03-21 | 1965-03-03 | 0.0 yrs | 0 | |
| US2456666A | Radio direction finding system | EMI Ltd | Expired / Lapsed | 1943-11-22 | 1948-12-21 | 1963-11-22 | 0.0 yrs | 0 | |
| US2405552A | Pulse generating thermionic valve apparatus | EMI Ltd | Expired / Lapsed | 1942-06-13 | 1946-08-13 | 1962-06-13 | 0.0 yrs | 0 | |
| US2311021A | Multiplex receiving system | EMI Ltd | Expired / Lapsed | 1939-07-19 | 1943-02-16 | 1959-07-19 | 0.0 yrs | 0 | |
| US2269001A | Thermionic valve amplifier | EMI Ltd | Expired / Lapsed | 1940-08-06 | 1942-01-06 | 1960-08-06 | 0.0 yrs | 0 | |
| US2263376A | Electric wave filter or the like | EMI Ltd | Expired / Lapsed | 1939-04-08 | 1941-11-18 | 1959-04-08 | 0.0 yrs | 0 | |
| US2227492A | Television receiving apparatus | EMI Ltd | Expired / Lapsed | 1937-02-20 | 1941-01-07 | 1957-02-20 | 0.0 yrs | 0 |
Showing 1 to 20 of 26 patents
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