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发明名称
摘要
申请公布号
NL7100149(A)
申请公布日期
1971.07.21
申请号
NL19710000149
申请日期
1971.01.07
申请人
发明人
分类号
H01F27/34;H01F27/38;(IPC1-7):H01F27/34
主分类号
H01F27/34
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代理人
主权项
地址
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