US Patent 7409055 DTMF Generating assistant
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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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US Patent 07409055 DTMF Generating assistant US Patent 7409055 DTMF Generating assistant
Infobox
Patent Number
0740905500
Patent Number
740905500
Edits on 29 Apr, 2023
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
074090550
Date of Patent
August 5, 2008
0Patent Application Number
116918810
Date Filed
March 27, 2007
0Official Website
Patent Primary Examiner
Edits on 28 Sep, 2022
Golden AI
Infobox
Is a
Patent Jurisdiction
Patent Number
074090550
Date of Patent
August 5, 2008
0Patent Application Number
116918810
Date Filed
March 27, 2007
0Official Website
Patent Primary Examiner
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Golden AI
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US Patent 07409055 DTMF Generating assistant
Infobox
Is a
Patent jurisdiction
Patent number
07409055
Date of patent
August 5, 2008
Patent application number
11691881
Date Filed
March 27, 2007
Patent primary examiner
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