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发明名称
Drilling below ground water level
摘要
申请公布号
GB2373268(B)
申请公布日期
2005.09.07
申请号
GB20010006616
申请日期
2001.03.16
申请人
* KELLER LIMITED
发明人
CHARLES J * MCANALLY
分类号
E02D5/74;E21B7/04;E21B7/20;(IPC1-7):E21B7/04
主分类号
E02D5/74
代理机构
代理人
主权项
地址
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