Sentex Systems, Inc.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5475741 Telephone-entry system with electronic directoryExpiredJun 06, 94Dec 12, 95[H04M]
5416495 Liquid-crystal display unit for electronic directoryExpiredDec 04, 92May 16, 95[G09G]
5027111 Liquid-crystal display unit for electronic directoryExpiredJul 07, 88Jun 25, 91[G09G]

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