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发明名称
Method of sidetracking wells
摘要
申请公布号
US2173035(A)
申请公布日期
1939.09.12
申请号
US19380190739
申请日期
1938.02.16
申请人
SECURITY ENGINEERING CO. INC.
发明人
ARMENTROUT ARTHUR L.;HALL ELWIN B.
分类号
E21B7/06;E21B7/08;E21B43/08
主分类号
E21B7/06
代理机构
代理人
主权项
地址
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