Vertizon Corporation

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
6868145 Alphanumeric keyboard with telephone dialing capabilityExpiredOct 24, 00Mar 15, 05[H04M]
5912948 Automatic screening apparatus and method for use with telephone answering devicesExpiredDec 10, 96Jun 15, 99[H04M]

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