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发明名称
Perfectionnements apportés aux procédés et dispositifs pour la fabrication de tubes en béton et autres matériaux similaires
摘要
申请公布号
FR1131847(A)
申请公布日期
1957.02.28
申请号
FRD1131847
申请日期
1952.02.06
申请人
发明人
HEIDENSTAM ERIK JOHAN VON
分类号
B28B21/30
主分类号
B28B21/30
代理机构
代理人
主权项
地址
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