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发明名称
Plancher en béton armé
摘要
申请公布号
FR928492(A)
申请公布日期
1947.11.28
申请号
FRD928492
申请日期
1946.05.31
申请人
发明人
LUDIG FELIX-BERNARD
分类号
E04B5/26
主分类号
E04B5/26
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