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发明名称
VERFAHREN ZUM BOHREN MIT EINEM FUTTERROHR
摘要
申请公布号
DE60116755(D1)
申请公布日期
2006.04.06
申请号
DE20016016755
申请日期
2001.05.14
申请人
TESCO CORP.;ANGMAN, PER G.
发明人
ANGMAN, G.
分类号
E21B7/20;E21B10/66;E21B23/08
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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