US Patent D876399 Single piece headphone
Is a
Date Filed
September 27, 2018
Date of Patent
February 25, 2020
Patent Application Number
29664812
Patent Inventor Names
Jeffery Cheung
0
Guillaume Mathias
0
Jeremy Saxton
0
Kuo-yu Kao
0
Shyh-Dean Chen
0
Stephen Duddy
0
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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