Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
August 5, 2008
Patent Application Number
11691881
Date Filed
March 27, 2007
Patent Primary Examiner
Patent abstract
A DTMF generating device for automatically generating DTMF tones corresponding to a predefined phone number comprises a processor, a memory, and a speaker enveloped in a credit card sized casing. The memory has stored therein DTMF tone samples corresponding to the predefined phone number. When a user presses on a portion of the casing, the DTMF tone samples are played by the speaker.
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