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发明名称
摘要
申请公布号
FR2284025(B1)
申请公布日期
1982.10.22
申请号
FR19750026847
申请日期
1975.09.02
申请人
DRAHTWERKE ROSLER KG
发明人
分类号
E21D23/00;E21D23/03;(IPC1-7):21D19/02;21D23/00;21F5/00;21D17/00
主分类号
E21D23/00
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