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发明名称
Perfectionnements aux poutres métalliques
摘要
申请公布号
FR993567(A)
申请公布日期
1951.11.02
申请号
FRD993567
申请日期
1949.06.10
申请人
NATIONAL STEEL CORPORATION
发明人
分类号
E04C3/04;E04C3/07
主分类号
E04C3/04
代理机构
代理人
主权项
地址
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