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发明名称
Tubular actuator component for use in a drill-string
摘要
申请公布号
GB9720093(D0)
申请公布日期
1997.11.19
申请号
GB19970020093
申请日期
1996.05.01
申请人
LEE, PAUL B
发明人
分类号
E21B10/32;E21B17/10;E21B23/04
主分类号
E21B10/32
代理机构
代理人
主权项
地址
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