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发明名称
Sealing method and apparatus for wellheads
摘要
申请公布号
EP0579393(B1)
申请公布日期
1998.02.11
申请号
EP19930304898
申请日期
1993.06.23
申请人
COOPER CAMERON CORPORATION
发明人
SMITH, JERRY D.;HUANG, PHILIP F.
分类号
E21B33/04;(IPC1-7):E21B33/04
主分类号
E21B33/04
代理机构
代理人
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