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发明名称
Perfectionnement aux noyaux magnétiques
摘要
申请公布号
FR928617(A)
申请公布日期
1947.12.03
申请号
FRD928617
申请日期
1946.06.07
申请人
发明人
GOUREVITCH JACQUES
分类号
H01F1/16
主分类号
H01F1/16
代理机构
代理人
主权项
地址
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