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| Patents for H04L 27 - Modulated-carrier systems (89,721) |
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| 03/02/1976 | US3942136 Time multiplex electron beam with modulating means | | 03/02/1976 | US3942117 All saturated switching mode solid state RF amplifier | | 03/02/1976 | US3941942 Two of eight tone encoder | | 03/02/1976 | US3941929 Transcoder for digital differential phase modulation | | 02/17/1976 | US3939473 Process for correcting signal distortions | | 02/17/1976 | US3939465 Remote underwater device activating system | | 02/17/1976 | US3939411 Instantaneous frequency measurement system | | 02/17/1976 | US3939407 Plural channel communications system | | 02/10/1976 | US3938052 Digital demodulator for phase-modulated waveforms | | 02/10/1976 | US3938045 Transmitter for frequency shift keyed modulation | | 02/10/1976 | US3937899 Tone detector using spectrum parameter estimation | | 02/10/1976 | US3937882 Full-duplex communication system on a two wire line | | 02/03/1976 | US3936801 Multifrequency signal receiver timing circuit | | 02/03/1976 | US3936762 Digital phase-lock loop systems for phase processing of signals | | 01/27/1976 | US3935386 Apparatus for synthesizing phase-modulated carrier wave | | 01/20/1976 | US3934097 Multifrequency tone detection | | 01/13/1976 | US3932708 Frequency-selective signal receiver for communication equipments, more particularly telephone equipments | | 01/13/1976 | US3932705 Psk telemetering synchronization and demodulation apparatus including an ambiguity eliminating device | | 01/13/1976 | US3932704 Coherent digital frequency shift keying system | | 01/13/1976 | US3931860 Low-profile platform scale | | 01/06/1976 | US3931472 Asynchronous quadriphase communications system and method |
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