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经营范围
发明名称
DOWNHOLE MUD MOTOR
摘要
申请公布号
EP0993538(A4)
申请公布日期
2002.08.07
申请号
EP19980932836
申请日期
1998.06.26
申请人
PEGASUS DRILLING TECHNOLOGIES, L.L.C.
发明人
VON GYNZ-REKOWSKI, GUNTHER
分类号
E21B4/00;E21B4/02;E21B4/16;E21B7/06;(IPC1-7):E21B4/02
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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