Post Office
Post OfficActive Patents
0
Total Holdings
37
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| FR2362546A1 | Data exchange with terminals for subscriber lines - has dat… | Expired / Lapsed | 1977-08-18 | — | 0 | Details |
| DE2736858A1 | PACKAGE CONTROL CENTER | Expired / Lapsed | 1977-08-16 | — | 0 | Details |
| DE2702803A1 | REMOTE SIGNALING SYSTEM | Expired / Lapsed | 1977-01-25 | — | 0 | Details |
| GB1480243A | Electrical signal initiating devices | Expired / Lapsed | 1975-04-07 | — | 0 | Details |
| 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 |
| USD259419S | Telephone instrument | Expired / Lapsed | 1978-04-05 | 1981-06-02 | 1 | Details |
| US4181515A | Method of making dielectric optical waveguides | Expired / Lapsed | 1977-10-21 | 1980-01-01 | 10 | Details |
| US4077699A | Optical devices | Expired / Lapsed | 1975-09-18 | 1978-03-07 | 14 | Details |
| US4027331A | Digital television system | Expired / Lapsed | 1975-07-24 | 1977-05-31 | 17 | Details |
| US3982075A | Synchronization system for time division multiple access re… | Expired / Lapsed | 1974-09-09 | 1976-09-21 | 34 | Details |
| US3930714A | Method of manufacturing an optical fibre light waveguide | Expired / Lapsed | 1973-11-19 | 1976-01-06 | 5 | Details |
| US3920900A | Telecommunications receivers | Expired / Lapsed | 1974-08-28 | 1975-11-18 | 9 | Details |
| US3900245A | Coupler for liquid core optical waveguides | Expired / Lapsed | 1973-08-24 | 1975-08-19 | 12 | Details |
| US3897135A | Optical communications systems | Expired / Lapsed | 1973-07-26 | 1975-07-29 | 10 | Details |
| US3846583A | Digital communication systems | Expired / Lapsed | 1972-10-18 | 1974-11-05 | 8 | Details |
| US3841731A | Improvements in or relating to liquid core dielectric waveg… | Expired / Lapsed | 1973-05-24 | 1974-10-15 | 4 | Details |
| US3772681A | Frequency synthesiser | Expired / Lapsed | 1971-10-12 | 1973-11-13 | 13 | Details |
| US3712536A | Mean-rate indicating apparatus | Expired / Lapsed | 1971-03-23 | 1973-01-23 | 10 | Details |
| US3703690A | Dielectric waveguides | Expired / Lapsed | 1970-12-15 | 1972-11-21 | 6 | Details |
| US3662089A | Modifications of wire connectors | Expired / Lapsed | 1970-11-09 | 1972-05-09 | 7 | Details |
| US3609685A | Character recognition by linear traverse | Expired / Lapsed | 1967-10-03 | 1971-09-28 | 4 | Details |
| US3588360A | Telecommunication systems | Expired / Lapsed | 1969-02-03 | 1971-06-28 | 0 | Details |
| US3562420A | Pseudo random quantizing systems for transmitting televisio… | Expired / Lapsed | 1968-03-12 | 1971-02-09 | 11 | Details |
| US3560869A | Frequency control of oscillators | Expired / Lapsed | 1968-03-11 | 1971-02-02 | 0 | Details |
| US3484559A | Interstage signalling system using discrete currents or vol… | Expired / Lapsed | 1966-07-28 | 1969-12-16 | 0 | Details |
| US3405235A | Systems for transmitting code pulses having low cumulative … | Expired / Lapsed | 1965-02-23 | 1968-10-08 | 0 | Details |
| US3351858A | Satellite communication systems | Expired / Lapsed | 1963-01-02 | 1967-11-07 | 2 | Details |
| US3341660A | Time division multiplex pulse code modulation communication… | Expired / Lapsed | 1964-01-14 | 1967-09-12 | 2 | Details |
| US3129030A | Grapnels for submarine cables | Expired / Lapsed | 1962-04-10 | 1964-04-14 | 2 | Details |
| US3056961A | Steerable directional random antenna array | Expired / Lapsed | 1958-08-12 | 1962-10-02 | 0 | 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 |
| US2727094A | Electrically operating selecting systems | Expired / Lapsed | 1951-05-07 | 1955-12-13 | 0 | Details |