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发明名称
摘要
申请公布号
JPS50129079(U)
申请公布日期
1975.10.23
申请号
JP19740038275U
申请日期
1974.04.05
申请人
发明人
分类号
H04R17/00;H03H9/02;(IPC1-7):H03H9/02;H03H9/20
主分类号
H04R17/00
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代理人
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