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发明名称
摘要
申请公布号
JPS6311818(Y2)
申请公布日期
1988.04.06
申请号
JP19810060563U
申请日期
1981.04.28
申请人
发明人
分类号
H04R1/44;H04R1/00;H04R17/00;(IPC1-7):H04R1/44
主分类号
H04R1/44
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代理人
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