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发明名称
摘要
申请公布号
JPH02119678(U)
申请公布日期
1990.09.26
申请号
JP19890028780U
申请日期
1989.03.13
申请人
发明人
分类号
G09B23/18;A63H17/00;A63H29/22;(IPC1-7):G09B23/18
主分类号
G09B23/18
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代理人
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