Telephone with character keypad

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United States of America Patent

PATENT NO 6243460
SERIAL NO

08324849

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Abstract

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A telephone that has dual keypads, wherein one of the keypads is a standard 12 number (1-9, 0, #, and *) keypad and the other keypad comprises a plurality of keys having a single character on each key. When a character key is pressed, it generates a DTMF pair corresponding to one of the 12 standard DTMF pairs.

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First Claim

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Patent Owner(s)

Patent OwnerAddress
AT&T IPM CORP2333 PONCE DE LEON BOULEVARD CORAL GABLES FL 33134

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bhagavatula, Satyasai Naperville, IL 1 10

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