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发明名称
摘要
申请公布号
JPH0744851(U)
申请公布日期
1995.11.28
申请号
JP19930009774U
申请日期
1993.01.27
申请人
发明人
分类号
G09B15/00;G10K15/04;H04R1/10;(IPC1-7):G10K15/04
主分类号
G09B15/00
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代理人
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