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申请公布号
JPS5357879(U)
申请公布日期
1978.05.17
申请号
JP19760137060U
申请日期
1976.10.15
申请人
发明人
分类号
G04G15/00;G04C9/00;G04C23/08;G04G5/02;(IPC1-7):G04C23/08
主分类号
G04G15/00
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