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发明名称
Well tubing hanger sealing assembly
摘要
申请公布号
AU648597(B2)
申请公布日期
1994.04.28
申请号
AU19910086535
申请日期
1991.08.26
申请人
COOPER INDUSTRIES, INC.
发明人
ROBERT MCINNES
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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