US Patent D504672 Headphone

Patent D504672 was granted and assigned to Sony on May, 2005 by the United States Patent and Trademark Office.

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Patent Applicant

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Patent Number

Patent Inventor Names

Shinpei Hirano0

Date of Patent

May 3, 2005

Patent Application Number

291927430

Date Filed

October 30, 2003

Patent Citations Received

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