SEISCOR TECHNOLOGIES, INC.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5237480 Apparatus for fault detection and isolationExpiredJul 29, 92Aug 17, 93[H02H]
4908819 Integrated data voice multiplexer supporting handshake and loop-back protocolsExpiredDec 23, 88Mar 13, 90[H04J]
4768227 Coil operated telephoneExpiredJun 29, 87Aug 30, 88[H04M]
4698840 Coin operated telephoneExpiredMar 22, 85Oct 06, 87[H04M]
4663580 Sealed lead-acid battery float charger and power supplyExpiredJan 09, 86May 05, 87[H02J]

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