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发明名称
摘要
申请公布号
JPS52102254(U)
申请公布日期
1977.08.03
申请号
JP19760009806U
申请日期
1976.01.31
申请人
发明人
分类号
G09B27/08;(IPC1-7):G09B27/08
主分类号
G09B27/08
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代理人
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