US Patent D509789 Combined charger and infrared ray emitter for headphone

Patent D509789 was granted and assigned to Sony on September, 2005 by the United States Patent and Trademark Office.

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Patent Number

Patent Inventor Names

Takuya Motoishi0

Date of Patent

September 20, 2005

Patent Application Number

292165420

Date Filed

November 5, 2004

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