Patent Explorer
Browse, filter, and analyze 10 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3041604A | Corner reflector formed of taut flat reflecting elements with resilient peripheral tesion frames | Decca Record Co Ltd | Expired / Lapsed | 1957-08-15 | 1962-06-26 | 1977-08-15 | 0.0 yrs | 0 | |
| US2838753A | Radio range-indicating systems | Decca Record Co Ltd | Expired / Lapsed | 1951-08-27 | 1958-06-10 | 1971-08-27 | 0.0 yrs | 0 | |
| US2834955A | Radar systems | Decca Record Co Ltd | Expired / Lapsed | 1952-09-22 | 1958-05-13 | 1972-09-22 | 0.0 yrs | 0 | |
| US2769977A | Position indicating apparatus for use with radio navigation systems | Decca Record Co Ltd | Expired / Lapsed | 1950-02-27 | 1956-11-06 | 1970-02-27 | 0.0 yrs | 0 | |
| US2598290A | Area identification system | Decca Record Co Ltd | Expired / Lapsed | 1945-08-27 | 1952-05-27 | 1965-08-27 | 0.0 yrs | 0 | |
| US2549923A | Vacuum tube oscillator | Decca Record Co Ltd | Expired / Lapsed | 1945-08-27 | 1951-04-24 | 1965-08-27 | 0.0 yrs | 0 | |
| US2531918A | Radio direction indicating device | Decca Record Co Ltd | Expired / Lapsed | 1947-01-20 | 1950-11-28 | 1967-01-20 | 0.0 yrs | 0 | |
| US2500200A | Multiple channel radio-frequency receiver | Decca Record Co Ltd | Expired / Lapsed | 1945-08-27 | 1950-03-14 | 1965-08-27 | 0.0 yrs | 0 | |
| US2449174A | Antenna supply phase and amplitude control | Decca Record Co Ltd | Expired / Lapsed | 1942-04-13 | 1948-09-14 | 1962-04-13 | 0.0 yrs | 0 | |
| US2430244A | Radio beacon system | Decca Record Co Ltd | Expired / Lapsed | 1946-10-07 | 1947-11-04 | 1966-10-07 | 0.0 yrs | 0 |