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发明名称
ROTARY VECTOR GEAR FOR USE IN ROTARY STEERABLE TOOLS
摘要
申请公布号
EP1709281(A4)
申请公布日期
2012.04.25
申请号
EP20050762801
申请日期
2005.01.28
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
EARLES, RONALD, B;LASATER, JEFFREY, B.
分类号
E21B7/06
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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