US Patent 9867022 Emergency services dual tone multi frequency (DTMF) function
Patent 9867022 was granted and assigned to Aeris Communications on January, 2018 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
May 9, 2014
Date of Patent
January 9, 2018
Patent Applicant
Patent Application Number
14274346
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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