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发明名称
Perfectionnements apportés aux éléments complexes pour la construction des planchers en ciment armé
摘要
申请公布号
FR854522(A)
申请公布日期
1940.04.17
申请号
FRD854522
申请日期
1939.05.09
申请人
SOC. AN. FABBRICHE FIAMMIFERI ED AFFINI
发明人
分类号
E04B5/23
主分类号
E04B5/23
代理机构
代理人
主权项
地址
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