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发明名称
HEARING AID
摘要
申请公布号
JPS60123199(U)
申请公布日期
1985.08.20
申请号
JP19840012477U
申请日期
1984.01.31
申请人
发明人
分类号
D06F71/00;D06F71/12;(IPC1-7):D06F71/12
主分类号
D06F71/00
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代理人
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