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US Patent 8111854 Methods and apparatus for sound production

OverviewStructured DataIssuesContributors
Is a
Patent
Patent
Date Filed
December 28, 2007
Date of Patent
February 7, 2012
Patent Application Number
12003560
Patent Citations Received
‌
US Patent 12010478 Open audio device
0
‌
US Patent 12133043 Non-blocking dual driver earphones
0
Patent Inventor Names
Yan-Ru Peng
0
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
8111854
Patent Primary Examiner
‌
Vivian Chin

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