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发明名称
Perfectionnement aux systèmes électriques de télécommande et de télésignalisation
摘要
申请公布号
FR845234(A)
申请公布日期
1939.08.16
申请号
FRD845234
申请日期
1938.10.27
申请人
COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ
发明人
分类号
H04L12/40
主分类号
H04L12/40
代理机构
代理人
主权项
地址
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