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发明名称
摘要
申请公布号
JPH01173768(U)
申请公布日期
1989.12.11
申请号
JP19880070890U
申请日期
1988.05.28
申请人
发明人
分类号
G09B5/02;G10L11/00;G10L15/00;(IPC1-7):G09B5/02;G10L3/00
主分类号
G09B5/02
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