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发明名称
摘要
申请公布号
JPS6214793(Y2)
申请公布日期
1987.04.15
申请号
JP19810173547U
申请日期
1981.11.20
申请人
发明人
分类号
H04R5/027;H04R1/40;H04R3/00;(IPC1-7):H04R1/40
主分类号
H04R5/027
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