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发明名称
Perfectionnements apportés aux élèments de construction, notamment à ceux destinés aux constructions en béton armé
摘要
申请公布号
FR728069(A)
申请公布日期
1932.06.29
申请号
FRD728069
申请日期
1931.12.10
申请人
SOCIETE ANONYME BRIFER
发明人
分类号
E04C3/22
主分类号
E04C3/22
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