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发明名称
Centralizer
摘要
申请公布号
GB2331534(B)
申请公布日期
2000.01.19
申请号
GB19980003668
申请日期
1998.02.23
申请人
* WEATHERFORD/LAMB, INC
发明人
BERND * REINHOLDT
分类号
E21B17/10;(IPC1-7):E21B17/10
主分类号
E21B17/10
代理机构
代理人
主权项
地址
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