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发明名称
Poutre perfectionnée pour la construction
摘要
申请公布号
FR830118(A)
申请公布日期
1938.07.21
申请号
FRD830118
申请日期
1937.11.29
申请人
发明人
ANDERSSON NILS VIKTOR
分类号
E04C3/04;E04C3/06
主分类号
E04C3/04
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代理人
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