US Patent 11955938 Acoustic output device and acoustic output method
Is a
Date Filed
September 11, 2020
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Date of Patent
April 9, 2024
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Patent Application Number
17642538
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Patent Inventor Names
Yoshio Koike
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Yoshiteru Uchida
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Tsutomu Kaizuka
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Kimihiko Nakano
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Manabu Sasajima
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Patent Jurisdiction
Patent Number
Patent Primary Examiner
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