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发明名称
摘要
申请公布号
JPH01177698(U)
申请公布日期
1989.12.19
申请号
JP19890053886U
申请日期
1989.05.10
申请人
发明人
分类号
H04R25/00;H04R25/02;(IPC1-7):H04R25/00
主分类号
H04R25/00
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代理人
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