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发明名称
CASING HANGER RUNNING TOOL FOR PACKOFF
摘要
申请公布号
GB2240564(A)
申请公布日期
1991.08.07
申请号
GB19900026893
申请日期
1990.12.11
申请人
* VETCO GRAY INC
发明人
PHILIPPE C * NOBILEAU
分类号
E21B23/00;E21B23/06;E21B33/043
主分类号
E21B23/00
代理机构
代理人
主权项
地址
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