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发明名称
摘要
申请公布号
JPS60186481(U)
申请公布日期
1985.12.10
申请号
JP19840074041U
申请日期
1984.05.22
申请人
发明人
分类号
G09B19/02;(IPC1-7):G09B19/02
主分类号
G09B19/02
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代理人
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