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发明名称
DOWNHOLE TORQUE GENERATOR
摘要
申请公布号
EP1386387(B1)
申请公布日期
2008.08.06
申请号
EP20020720297
申请日期
2002.05.01
申请人
SPRING, GREGSON WILLIAM MARTIN
发明人
SPRING, GREGSON WILLIAM MARTIN
分类号
E21B17/02;H02K49/04;E21B4/04;E21B7/06;E21B41/00;F04D13/10;F04D15/00;F04D29/66;H02K7/18;H02K16/02;H02K17/34
主分类号
E21B17/02
代理机构
代理人
主权项
地址
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