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经营范围
发明名称
WELL TUBING HANGER SEALING ASSEMBLY.
摘要
申请公布号
EP0498878(B1)
申请公布日期
1994.11.09
申请号
EP19910917074
申请日期
1991.08.26
申请人
COOPER INDUSTRIES INC.
发明人
MCINNES, ROBERT
分类号
E21B33/00;E21B33/04;(IPC1-7):E21B33/04
主分类号
E21B33/00
代理机构
代理人
主权项
地址
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