Phase plug for earpiece

JP1820515SActive Publication Date: 2026-03-04三瓶秀昭
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Patent Information

Application Number
JP2025021625D
Authority / Receiving Office
JP · JP
Patent Type
Designs
Current Assignee / Owner
Filing Date
2025-10-26
Publication Date
2026-03-04
Estimated Expiration
2050-10-26

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Abstract

This product is a phase plug that is attached to the sound guide tube of an earphone earpiece.
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