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发明名称
摘要
申请公布号
NL209881(A)
申请公布日期
1960.09.15
申请号
NL19560209881
申请日期
1956.08.16
申请人
发明人
分类号
H01H33/32;H01H33/56
主分类号
H01H33/32
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