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发明名称
Труба обсадной колонны
摘要
申请公布号
RU36427(U1)
申请公布日期
2004.03.10
申请号
RU20030124853U
申请日期
2003.08.14
申请人
发明人
分类号
E21B17/08;E21B17/18
主分类号
E21B17/08
代理机构
代理人
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