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摘要
申请公布号
JPS5845559(U)
申请公布日期
1983.03.26
申请号
JP19810140874U
申请日期
1981.09.21
申请人
发明人
分类号
G09B11/10;(IPC1-7):G09B11/10
主分类号
G09B11/10
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