US Patent 9729971 Stereo earphone
Is a
Date Filed
December 29, 2014
0
Date of Patent
August 8, 2017
0
Patent Application Number
14584206
0
Patent Inventor Names
Masahide Tanaka
0
Hiroshi Hosoi
0
Masashi Morimoto
0
Yoji Hosoi
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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