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发明名称
VARIABLE FLOW SLIDING SLEEVE VALVE AND POSITIONING SHIFTING TOOL THEREFOR.
摘要
申请公布号
GB2262954(A)
申请公布日期
1993.07.07
申请号
GB19920026776
申请日期
1992.12.23
申请人
* OTIS ENGINEERING CORPORATION
发明人
HOWARD RICHARDSON * MASHAW JUNIOR;CHRISTOPHER ARTHUR * DINES;ROBERT CRAIG * HAMMETT;CLARK EDWARD * ROBISON
分类号
E21B34/14;E21B43/12
主分类号
E21B34/14
代理机构
代理人
主权项
地址
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