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发明名称
Procédé et appareil pour l'obtention de surfaces rugueuses sur les chaussées ou autres ouvrages en béton
摘要
申请公布号
FR763260(A)
申请公布日期
1934.04.26
申请号
FRD763260
申请日期
1933.11.02
申请人
发明人
BERTRAND JULIEN
分类号
E01C19/43
主分类号
E01C19/43
代理机构
代理人
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