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发明名称
Horizontall tree block for subsea well
摘要
申请公布号
GB9724842(D0)
申请公布日期
1998.01.21
申请号
GB19970024842
申请日期
1997.11.26
申请人
ABB VETCO GRAY INC
发明人
分类号
E21B33/035
主分类号
E21B33/035
代理机构
代理人
主权项
地址
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