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发明名称
Dispositif de commande du trafic ferroviaire
摘要
申请公布号
FR821432(A)
申请公布日期
1937.12.04
申请号
FRD821432
申请日期
1937.05.04
申请人
COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE
发明人
分类号
B61L3/22
主分类号
B61L3/22
代理机构
代理人
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地址
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