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发明名称
摘要
申请公布号
JPS53100231(U)
申请公布日期
1978.08.14
申请号
JP19770092499U
申请日期
1977.07.12
申请人
发明人
分类号
H04R9/02;H04R1/22;H04R9/06;H04R9/08;(IPC1-7):H04R9/02
主分类号
H04R9/02
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