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发明名称
摘要
申请公布号
JPS6312364(Y2)
申请公布日期
1988.04.08
申请号
JP19820125585U
申请日期
1982.08.20
申请人
发明人
分类号
G09B19/02;G09B3/02;(IPC1-7):G09B19/02
主分类号
G09B19/02
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代理人
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