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经营范围
发明名称
Procédé et disposition destinés à la génération de champs électriques tournants
摘要
申请公布号
FR678353(A)
申请公布日期
1930.03.21
申请号
FRD678353
申请日期
1929.07.12
申请人
发明人
LUDKE WERNER
分类号
主分类号
代理机构
代理人
主权项
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