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| Patents for H04J 3 - Time-division multiplex systems (63,408) |
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| 02/17/1976 | US3939407 Plural channel communications system | | 02/17/1976 | US3939307 Arrangement for utilizing all pulses in a narrow band channel of a time-division multiplex, pulse code modulation system | | 02/10/1976 | US3938144 Digital multiplexing system remote scanning of a plurality of monitoring points | | 02/10/1976 | US3937897 Signal coding for telephone communication system | | 02/03/1976 | US3936609 Submultiplex transmission of alarm status signals for a time division multiplex system | | 02/03/1976 | US3936604 Synchronization of clocks in digital signalling networks | | 02/03/1976 | US3936595 Signal transmission system for transmitting programed information such as programed instruction | | 01/06/1976 | US3931473 Digital multiplexer system |
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