Texscan Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4823386 Addressable subscriber cable television systemExpiredMay 27, 87Apr 18, 89[H04N]
4812779 Low-power feedforward amplifierExpiredJun 29, 87Mar 14, 89[H03F, H03G]
4677390 Low-power feedforward amplifierExpiredFeb 24, 86Jun 30, 87[H03F, H03G]
4641115 Radio frequency chokes having two windings and means for dampening parasitic resonancesExpiredJun 04, 84Feb 03, 87[H03H]
4475123 Addressable subscriber cable television systemExpiredApr 02, 81Oct 02, 84[H04N, H04K]
4308497 Peak level detectorExpiredJun 18, 79Dec 29, 81[G01R]
4226495 Cable system subscriber tap with rotating center conductor seizure apparatus and spiral contact and method for using sameExpiredApr 27, 79Oct 07, 80[H01R]

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