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发明名称
Dispositif automatique permettant l'utilisation d'une puissance constante à des tentions différentes en courant continu et en courant alternatif pour le chauffage des voitures de chemin de fer
摘要
申请公布号
FR789485(A)
申请公布日期
1935.10.29
申请号
FRD789485
申请日期
1934.07.31
申请人
发明人
DAMOND EMILE
分类号
B60L1/02
主分类号
B60L1/02
代理机构
代理人
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