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经营范围
发明名称
Power tong frames
摘要
申请公布号
GB2370246(B)
申请公布日期
2004.06.23
申请号
GB20000028313
申请日期
2000.11.21
申请人
* WEATHERFORD/LAMB, INC.;* WEATHERFORD/LAMB INC.
发明人
BERND-GEORG * PIETRAS
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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