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发明名称
摘要
申请公布号
JPS6279267(U)
申请公布日期
1987.05.21
申请号
JP19850170532U
申请日期
1985.11.06
申请人
发明人
分类号
G09B11/04;G09B21/00;(IPC1-7):G09B21/00
主分类号
G09B11/04
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