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发明名称
Système de liaison entre relais électriques pour amplificateurs de courants variables
摘要
申请公布号
FR675894(A)
申请公布日期
1930.02.15
申请号
FRD675894
申请日期
1929.05.29
申请人
发明人
LAFAYE EMILE-JACQUES
分类号
H01F19/00
主分类号
H01F19/00
代理机构
代理人
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