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经营范围
发明名称
Crocodile pour signalisation des voies ferrées
摘要
申请公布号
FR45837(E)
申请公布日期
1935.12.09
申请号
FRD45837
申请日期
1935.02.12
申请人
发明人
BEAUVAIS GEORGES EMILE
分类号
B61L3/10
主分类号
B61L3/10
代理机构
代理人
主权项
地址
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