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发明名称
Procédé pour faire des poutres en béton armé de grande portée en particulier pour les constructions de halls et de ponts
摘要
申请公布号
FR887019(A)
申请公布日期
1943.11.02
申请号
FRD887019
申请日期
1942.10.20
申请人
发明人
HOYER EWALD
分类号
E01D1/00;E04C3/26
主分类号
E01D1/00
代理机构
代理人
主权项
地址
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