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发明名称
Improving collapse resistance of tubing
摘要
申请公布号
GB0216074(D0)
申请公布日期
2002.08.21
申请号
GB20020016074
申请日期
2002.07.11
申请人
WEATHERFORD/LAMB INC.
发明人
分类号
C21D7/04;C21D7/12;E21B17/00;E21B43/10
主分类号
C21D7/04
代理机构
代理人
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