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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
4941172 Preprogrammed autodialer and related processExpiredFeb 09, 89Jul 10, 90[H04M]
4817135 CRT mass-distribution, preprogrammed automatic dialing mechanism and related processesExpiredNov 24, 87Mar 28, 89[H04M]

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