Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 18, 2023
0Patent Application Number
176622330
Date Filed
May 6, 2022
0Patent Primary Examiner
A headphone device includes a covering member, a sound chamber casing and a speaker unit. The sound chamber casing is combined with the covering member, so that a sound chamber is formed. The speaker unit is installed within the sound chamber. The sound chamber includes a gas channel. The gas channel has a bend portion.
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