Post Office
Post OfficActive Patents
0
Total Holdings
13
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| GB1331228A | Electro-optic apparatus | Expired / Lapsed | 1969-12-02 | — | 0 | Details |
| US4445754A | Glass optical fibres and glass compositions therefor | Expired / Lapsed | 1980-04-01 | 1984-05-01 | 10 | Details |
| US3920900A | Telecommunications receivers | Expired / Lapsed | 1974-08-28 | 1975-11-18 | 9 | Details |
| US3846583A | Digital communication systems | Expired / Lapsed | 1972-10-18 | 1974-11-05 | 8 | Details |
| US3712536A | Mean-rate indicating apparatus | Expired / Lapsed | 1971-03-23 | 1973-01-23 | 10 | Details |
| US3609685A | Character recognition by linear traverse | Expired / Lapsed | 1967-10-03 | 1971-09-28 | 4 | Details |
| US3484559A | Interstage signalling system using discrete currents or vol… | Expired / Lapsed | 1966-07-28 | 1969-12-16 | 0 | Details |
| US3351858A | Satellite communication systems | Expired / Lapsed | 1963-01-02 | 1967-11-07 | 2 | Details |
| US2994064A | Information transmitting circuits | Expired / Lapsed | 1955-04-11 | 1961-07-25 | 0 | Details |
| US2960682A | Decoding equipment | Expired / Lapsed | 1956-08-13 | 1960-11-15 | 0 | Details |
| US2931013A | Electrical selecting systems | Expired / Lapsed | 1954-01-18 | 1960-03-29 | 0 | Details |
| US2927161A | Pulse distribution systems | Expired / Lapsed | 1954-01-08 | 1960-03-01 | 0 | Details |
| US2910541A | Time-division multiplex communication systems | Expired / Lapsed | 1953-11-09 | 1959-10-27 | 0 | Details |