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发明名称
Perfectionnement apporté aux crapauds de fixation des caillebotis sur les fers porteurs
摘要
申请公布号
FR1091473(A)
申请公布日期
1955.04.12
申请号
FRD1091473
申请日期
1954.01.18
申请人
发明人
BARRE PIERRE-ALEXANDRE-ETI
分类号
E04B5/10
主分类号
E04B5/10
代理机构
代理人
主权项
地址
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