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发明名称
Perfectionnements apportés aux procédés et dispositifs pour la fabrication de tubes à profil de passage déterminé en béton ou matériau analogue et tubes fabriqués par application de ces procédés et dispositifs perfectionnés
摘要
申请公布号
FR1149787(A)
申请公布日期
1957.12.31
申请号
FRD1149787
申请日期
1956.05.16
申请人
发明人
SMITS HENRICUS FRANCISCUS MARIA
分类号
B28B21/06;B28B21/16
主分类号
B28B21/06
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代理人
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