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经营范围
发明名称
Procédé et dispositif pour rendre visibles des champs magnétiques
摘要
申请公布号
FR823013(A)
申请公布日期
1938.01.12
申请号
FRD823013
申请日期
1937.06.14
申请人
发明人
UNGER FRANZ;HILPERT RICHARD SIEGFRIED
分类号
G01N27/84
主分类号
G01N27/84
代理机构
代理人
主权项
地址
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