Presearch Incorporated

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
7248632 Video data storage and transmission system and methodExpiredJun 26, 03Jul 24, 07[H04B]
5237408 Retrofitting digital video surveillance systemExpiredAug 02, 91Aug 17, 93[H04N]
5170359 Transient episode detector method and apparatusExpiredJun 05, 90Dec 08, 92[G06F]
4271552 Torpedo floatation deviceExpiredJul 06, 79Jun 09, 81[B63B]

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