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发明名称
摘要
申请公布号
SU547860(A1)
申请公布日期
1977.02.25
申请号
SU19762348051
申请日期
1976.04.21
申请人
发明人
分类号
H01H33/664;H01H9/30;H01H33/66;(IPC1-7):H01H33/66
主分类号
H01H33/664
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代理人
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