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发明名称
摘要
申请公布号
JPS54128476(U)
申请公布日期
1979.09.06
申请号
JP19780025496U
申请日期
1978.02.27
申请人
发明人
分类号
G04C3/00;G04C9/00;G04G21/00;G04G99/00;H01H19/00;(IPC1-7):G04C3/00
主分类号
G04C3/00
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