Telex Computer Products Inc
Telex CompActive Patents
0
Total Holdings
12
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US4674082A | PBX telephone system I/O interface | Expired / Lapsed | 1986-10-31 | 1987-06-16 | 6 | Details |
| US4556970A | PBX Telephone system remote synchronization | Expired / Lapsed | 1985-02-25 | 1985-12-03 | 11 | Details |
| US4231629A | Apparatus for connection of coaxial cables to a printed cir… | Expired / Lapsed | 1979-01-18 | 1980-11-04 | 4 | Details |
| US4044312A | Comparison circuit for removing possibly false signals from… | Expired / Lapsed | 1976-11-26 | 1977-08-23 | 5 | Details |
| US4017689A | Digit analysis system for private automatic branch exchange… | Expired / Lapsed | 1975-03-25 | 1977-04-12 | 8 | Details |
| US3936604A | Synchronization of clocks in digital signalling networks | Expired / Lapsed | 1975-02-20 | 1976-02-03 | 5 | Details |
| US3883696A | Solid state crosspoint switch | Expired / Lapsed | 1973-09-28 | 1975-05-13 | 4 | Details |
| US3789151A | Solid state crosspoint switch | Expired / Lapsed | 1972-03-06 | 1974-01-29 | 12 | Details |
| US3626383A | Process for automatic system maintenance | Expired / Lapsed | 1969-11-26 | 1971-12-07 | 50 | Details |
| US3585310A | Telephone switching system | Expired / Lapsed | 1968-12-23 | 1971-06-15 | 19 | Details |
| US3573376A | Signalling system with upper and lower case designations | Expired / Lapsed | 1969-12-29 | 1971-04-06 | 4 | Details |
| US3489857A | Trunk connection arrangement for private telephone exchange | Expired / Lapsed | 1966-08-19 | 1970-01-13 | 0 | Details |