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发明名称
Pivoting pipe handler for off-line make up drill pipe joints
摘要
申请公布号
GB2465095(A)
申请公布日期
2010.05.12
申请号
GB20100000298
申请日期
2008.06.10
申请人
NATIONAL-OILWELL, L.P.
发明人
NEIL E FEHRES;THOMAS A YOST
分类号
E21B19/15;E21B19/16
主分类号
E21B19/15
代理机构
代理人
主权项
地址
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