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Ocharaku Co. Ltd. Patent Filings

Ocharaku Co. Ltd.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Ocharaku Co. Ltd..The latest application filed is for "twin driver earphone".

Company Profile
0.1.1
  • Ocharaku Co. Ltd. - Tokyo JP
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Twin driver earphone
Grant 8,660,288 - Yamagishi February 25, 2
2014-02-25
Twin Driver Earphone
App 20130266170 - Yamagishi; Makoto
2013-10-10

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