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发明名称
摘要
申请公布号
JPH0128540(Y2)
申请公布日期
1989.08.30
申请号
JP19840047096U
申请日期
1984.03.30
申请人
发明人
分类号
G09B29/02;(IPC1-7):G09B29/02
主分类号
G09B29/02
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