Robinton Products, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4709375 Digital phase selection system for signal multipliersExpiredOct 18, 83Nov 24, 87[H04B]
4692761 Adaptive communication network and methodExpiredJun 21, 85Sep 08, 87[H04Q, H04J]
4688234 Apparatus and method for producing a signal-to-noise ratio figure of merit for digitally encoded-dataExpiredJun 21, 85Aug 18, 87[H04B]
4640988 Telephone interrupterExpiredApr 03, 84Feb 03, 87[H04M]
4573037 Analog-to digital converter and methodExpiredAug 01, 83Feb 25, 86[H03K]
4542354 Delta-sigma pulse modulator with offset compensationExpiredAug 01, 83Sep 17, 85[H03K]
4335354 Sensitive demodulator for frequency shift keyed carrier signalsExpiredApr 04, 80Jun 15, 82[H03D]

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