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发明名称
摘要
申请公布号
JPS5442766(Y2)
申请公布日期
1979.12.11
申请号
JP19770028359U
申请日期
1977.03.08
申请人
发明人
分类号
G09B11/10;A63H33/00;A63H33/22;G09B11/00;(IPC1-7):G09B11/00
主分类号
G09B11/10
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