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发明名称
Равнопроходна облегченна бурильна труба диаметром 73 мм
摘要
申请公布号
RU36480(U1)
申请公布日期
2004.03.10
申请号
RU20030120685U
申请日期
2003.07.08
申请人
发明人
分类号
E21B17/00;F16L9/02
主分类号
E21B17/00
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