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发明名称
摘要
申请公布号
NL7018552(A)
申请公布日期
1971.07.06
申请号
NL19700018552
申请日期
1970.12.21
申请人
发明人
分类号
H01F7/04;H01H7/14;H01H71/32;(IPC1-7):H01H83/02
主分类号
H01F7/04
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代理人
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