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发明名称
Procédé pour la fabrication continue des canalisations en béton et produit obtenu
摘要
申请公布号
FR44887(E)
申请公布日期
1935.04.24
申请号
FRD44887
申请日期
1934.05.28
申请人
发明人
HUMBERT
分类号
B28B21/88
主分类号
B28B21/88
代理机构
代理人
主权项
地址
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