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发明名称
Method and apparatus for making drilled piles in hard ground.
摘要
申请公布号
HK1050227(A1)
申请公布日期
2004.11.26
申请号
HK20030100364
申请日期
2003.01.15
申请人
COMPAGNIE DU SOL
发明人
DANIEL GOUVENOT
分类号
E21B45/00;E02D1/02;E02D13/06;E21B44/00;E21B49/00;(IPC1-7):E02D;E21B
主分类号
E21B45/00
代理机构
代理人
主权项
地址
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