Method and apparatus for selective silencing of telephone ringing | Patent Number 09749469
US 09749469 B2Filled DateNov 2, 2016
Priority DateMar 20, 2008
Publication DateFeb 23, 2017
Expiration DateMar 19, 2028
Inventor/ApplicantsSteve Cha
Steve CHA
Steve CHA
ExaminesTESHALE, AKELAW
Art Unit2653
Technology Center2600
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