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发明名称
Perfectionnement aux noyaux magnétiques
摘要
申请公布号
FR1020721(A)
申请公布日期
1953.02.10
申请号
FRD1020721
申请日期
1950.06.23
申请人
发明人
ROUGEMONT CHRISTIAN DE
分类号
H01F21/06
主分类号
H01F21/06
代理机构
代理人
主权项
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