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经营范围
发明名称
Nouveau procédé de signalisation basé sur le principe de la commande à distance par ondes électromagnétiques et destiné au chemin de fer et à la navigation maritime
摘要
申请公布号
FR879315(A)
申请公布日期
1943.02.19
申请号
FRD879315
申请日期
1942.02.16
申请人
发明人
MONTAUCET GEORGES
分类号
B61L3/12
主分类号
B61L3/12
代理机构
代理人
主权项
地址
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