US Patent 10917731 Acoustic valve for hearing device
Patent 10917731 was granted and assigned to Knowles (company) on February, 2021 by the United States Patent and Trademark Office.
Is a
Current Assignee
Date Filed
December 31, 2018
Date of Patent
February 9, 2021
Patent Applicant
Patent Application Number
16237305
Patent Jurisdiction
Patent Number
Patent Primary Examiner
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