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发明名称
摘要
申请公布号
SU550698(A1)
申请公布日期
1977.03.15
申请号
SU19742058666
申请日期
1974.09.09
申请人
发明人
分类号
H01H85/30;(IPC1-7):H01H85/30
主分类号
H01H85/30
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代理人
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