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发明名称
Plateforme rigide et réglable en béton armé pour le support des voies de chemins de fer
摘要
申请公布号
FR39899(E)
申请公布日期
1932.03.18
申请号
FRD39899
申请日期
1931.01.20
申请人
发明人
FORESTIER JOSEPH-VICTOR
分类号
E01B3/38
主分类号
E01B3/38
代理机构
代理人
主权项
地址
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