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经营范围
发明名称
Perfectionnement aux noyaux magnétiques
摘要
申请公布号
FR967915(A)
申请公布日期
1950.11.15
申请号
FRD967915
申请日期
1948.06.10
申请人
发明人
STERKO NICOLAS
分类号
H01F17/04
主分类号
H01F17/04
代理机构
代理人
主权项
地址
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