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发明名称
Dispositif et procédé pour la fabrication d'éléments creux et plus particulièrement des tuyaux de béton
摘要
申请公布号
FR1116341(A)
申请公布日期
1956.05.07
申请号
FRD1116341
申请日期
1954.12.22
申请人
发明人
KERCKHOVE WILLY VAN
分类号
B28B21/90
主分类号
B28B21/90
代理机构
代理人
主权项
地址
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