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发明名称
Anordning til bruk ved boring eller klargjoring av en undervanns bronn
摘要
申请公布号
NO318722(B1)
申请公布日期
2005.05.02
申请号
NO19980002189
申请日期
1998.05.13
申请人
DRIL-QUIP INC
发明人
WATKINS BRUCE J
分类号
E21B17/01;E21B17/08;(IPC1-7):E21B17/01
主分类号
E21B17/01
代理机构
代理人
主权项
地址
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