发明名称 Structure of earphone
摘要 An improved structure of earphone comprising a sound putting out earplug, a microphone and an intermediate connecting bar, wherein, the connecting bar includes several sections pivotally and foldably connected with each other; thereby, the microphone can be collapsed when in use to be effectively gotten close to one's mouth, so that communication is clear, and can be collapsed to reduce volume for storage when not in use.
申请公布号 US2002071586(A1) 申请公布日期 2002.06.13
申请号 US20000734909 申请日期 2000.12.13
申请人 SUNG CHARLES PAO-HUI 发明人 SUNG CHARLES PAO-HUI
分类号 H04R1/08;(IPC1-7):H04R25/00 主分类号 H04R1/08
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