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经营范围
发明名称
Traverses de chemin de fer en matériau mixte à triangulation simple ou multiple
摘要
申请公布号
FR688549(A)
申请公布日期
1930.08.26
申请号
FRD688549
申请日期
1929.04.11
申请人
SOCIETE PARISIENNE D'ENTREPRISES
发明人
分类号
E01B3/40
主分类号
E01B3/40
代理机构
代理人
主权项
地址
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