PARSNIP RIVER COMPANY

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4365112 Speech detector circuit for a TASI systemExpiredMar 17, 80Dec 21, 82[H04J]
4352957 Speech detector circuit with associated gain control for a tasi systemExpiredMar 04, 81Oct 05, 82[H04J]
4314100 Data detection circuit for a TASI systemExpiredJan 24, 80Feb 02, 82[G10L]
4284850 Digital memory providing fixed and variable delays in a TASI systemExpiredJan 12, 79Aug 18, 81[H04J]
4251881 Centralized automatic gain control circuitExpiredJun 05, 78Feb 17, 81[H04J]
4230913 Line concentratorExpiredJan 04, 79Oct 28, 80[H04Q, H04J]
4218587 Complex signal generation and transmissionExpiredSep 18, 78Aug 19, 80[H04J]
4184051 Digital memory providing fixed and variable delays in a TASI systemExpiredDec 23, 77Jan 15, 80[H04J]

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