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发明名称
AN APPARATUS AND METHOD FOR FACILITATING THE CONNECTION OF TUBULARS USING A TOP DRIVE
摘要
申请公布号
EP1141512(B1)
申请公布日期
2003.10.01
申请号
EP19990956227
申请日期
1999.11.29
申请人
WEATHERFORD/LAMB, INC.
发明人
PIETRAS, BERND-GEORG
分类号
E21B21/10;E21B19/16;(IPC1-7):E21B19/16
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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