Patent Explorer
Browse, filter, and analyze 27 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB888983A | An arrangement for transmission of information without errors | STC PLC | Expired / Lapsed | 1960-10-21 | — | 1980-10-21 | 0.0 yrs | 0 | |
| US4533247A | Optical transmission system | STC PLC | Expired / Lapsed | 1982-08-23 | 1985-08-06 | 2002-08-23 | 0.0 yrs | 17 | |
| US2688656A | Means for checking recorded information | STC PLC | Expired / Lapsed | 1950-11-24 | 1954-09-07 | 1970-11-24 | 0.0 yrs | 0 | |
| US2557951A | Antenna system | STC PLC | Expired / Lapsed | 1945-06-19 | 1951-06-26 | 1965-06-19 | 0.0 yrs | 0 | |
| US2480115A | Radio control system | STC PLC | Expired / Lapsed | 1946-11-30 | 1949-08-30 | 1966-11-30 | 0.0 yrs | 0 | |
| US2480160A | Signaling system | STC PLC | Expired / Lapsed | 1945-06-27 | 1949-08-30 | 1965-06-27 | 0.0 yrs | 0 | |
| US2454782A | Adjustable expanded sweep for radar oscilloscopes | STC PLC | Expired / Lapsed | 1942-12-08 | 1948-11-30 | 1962-12-08 | 0.0 yrs | 0 | |
| US2454772A | Pulse echo system for distance measuring | STC PLC | Expired / Lapsed | 1942-12-10 | 1948-11-30 | 1962-12-10 | 0.0 yrs | 0 | |
| US2447233A | Pulse time modulation multiplex receiver | STC PLC | Expired / Lapsed | 1944-03-15 | 1948-08-17 | 1964-03-15 | 0.0 yrs | 0 | |
| US2444425A | Antenna array | STC PLC | Expired / Lapsed | 1943-08-09 | 1948-07-06 | 1963-08-09 | 0.0 yrs | 0 | |
| US2444426A | Repeater control system | STC PLC | Expired / Lapsed | 1943-10-26 | 1948-07-06 | 1963-10-26 | 0.0 yrs | 0 | |
| US2444438A | Pulse generation method | STC PLC | Expired / Lapsed | 1944-08-07 | 1948-07-06 | 1964-08-07 | 0.0 yrs | 0 | |
| US2444042A | Electrically operated calculating apparatus for converting numbers from binary to decimal form | STC PLC | Expired / Lapsed | 1943-07-12 | 1948-06-29 | 1963-07-12 | 0.0 yrs | 0 | |
| US2433341A | Radio navigation system and method | STC PLC | Expired / Lapsed | 1944-05-01 | 1947-12-30 | 1964-05-01 | 0.0 yrs | 0 | |
| US2424984A | Distance and direction radio object detection | STC PLC | Expired / Lapsed | 1942-02-14 | 1947-08-05 | 1962-02-14 | 0.0 yrs | 0 | |
| US2421016A | Radar testing apparatus | STC PLC | Expired / Lapsed | 1942-05-25 | 1947-05-27 | 1962-05-25 | 0.0 yrs | 0 | |
| US2419568A | Transmission system | STC PLC | Expired / Lapsed | 1943-07-16 | 1947-04-29 | 1963-07-16 | 0.0 yrs | 0 | |
| US2419548A | Discriminator circuit | STC PLC | Expired / Lapsed | 1943-05-15 | 1947-04-29 | 1963-05-15 | 0.0 yrs | 0 | |
| US2416329A | Push-pull modulation system | STC PLC | Expired / Lapsed | 1942-08-24 | 1947-02-25 | 1962-08-24 | 0.0 yrs | 0 | |
| US2408078A | Constant width synchronized pulse generator | STC PLC | Expired / Lapsed | 1942-02-03 | 1946-09-24 | 1962-02-03 | 0.0 yrs | 0 |
Showing 1 to 20 of 27 patents
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