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发明名称
POWER TONG
摘要
申请公布号
EP1147285(B1)
申请公布日期
2005.02.16
申请号
EP19990963649
申请日期
1999.12.24
申请人
WEATHERFORD/LAMB, INC.
发明人
SCHULZE-BECKINGHAUSEN, JORG, ERICH;PIETRAS, BERND-GEORG
分类号
E21B19/16;(IPC1-7):E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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