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发明名称
摘要
申请公布号
JPS5334355(U)
申请公布日期
1978.03.25
申请号
JP19760116138U
申请日期
1976.08.30
申请人
发明人
分类号
G09B23/38;(IPC1-7):G09B23/38
主分类号
G09B23/38
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