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发明名称
VORRICHTUNG UND VERFAHREN UM EINE VIELZAHL VON BOHRUNGEN ZU BOHREN UND AUSZURÜSTEN
摘要
申请公布号
DE69400907(D1)
申请公布日期
1996.12.19
申请号
DE1994600907
申请日期
1994.09.16
申请人
MARATHON OIL CO., FINDLAY, OHIO, US
发明人
COLLINS, GARY, J., RICHMOND, TX 77469, US;BAUDOIN, ERVIN, LAFAYETTE, LA 77508, US
分类号
E21B7/06;E21B7/00;E21B7/04;E21B7/08;E21B23/00;E21B33/03;E21B33/047;E21B43/017;E21B43/14;E21B43/30;(IPC1-7):E21B43/30
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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