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发明名称
摘要
申请公布号
GB1258821(A)
申请公布日期
1971.12.30
申请号
GBD1258821
申请日期
1969.01.07
申请人
发明人
分类号
H01H13/58;H01H13/72
主分类号
H01H13/58
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