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经营范围
发明名称
DUAL BARRIER PLUG SYSTEM FOR A WELLHEAD
摘要
申请公布号
EP2464813(A1)
申请公布日期
2012.06.20
申请号
EP20100749941
申请日期
2010.08.12
申请人
GE OIL & GAS PRESSURE CONTROL LP
发明人
NGUYEN, KHANG VAN;TRUMBULL, MARTIN ANTHONY
分类号
E21B33/03;E21B33/12;E21B34/02
主分类号
E21B33/03
代理机构
代理人
主权项
地址
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