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发明名称
摘要
申请公布号
JPS5877998(U)
申请公布日期
1983.05.26
申请号
JP19810172153U
申请日期
1981.11.20
申请人
发明人
分类号
H04R17/00;B06B1/06;H03H9/00;H03H9/05;H04R17/10;(IPC1-7):H04R17/00
主分类号
H04R17/00
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代理人
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