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发明名称
摘要
申请公布号
JPS6039897(Y2)
申请公布日期
1985.11.29
申请号
JP19810054356U
申请日期
1981.04.14
申请人
发明人
分类号
G09B27/08;G09B27/00;(IPC1-7):G09B27/00
主分类号
G09B27/08
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