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发明名称
摘要
申请公布号
JPS6014292(Y2)
申请公布日期
1985.05.07
申请号
JP19790159742U
申请日期
1979.11.17
申请人
发明人
分类号
G09B15/00;G06Q50/00;G06Q50/10;G06Q50/20;G09B15/04;G10G1/02
主分类号
G09B15/00
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