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发明名称
摘要
申请公布号
NL7002232(A)
申请公布日期
1971.08.20
申请号
NL19700002232
申请日期
1970.02.18
申请人
发明人
分类号
H01F27/36;H01J29/86;(IPC1-7):H01J3/00;H01J29/70
主分类号
H01F27/36
代理机构
代理人
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地址
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