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发明名称
摘要
申请公布号
JPS578312(Y2)
申请公布日期
1982.02.17
申请号
JP19780177630U
申请日期
1978.12.20
申请人
发明人
分类号
H04R7/20;(IPC1-7):H04R7/20
主分类号
H04R7/20
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