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发明名称
Устройство дл цементировани дополнительной обсадной колонны
摘要
申请公布号
RU36026(U1)
申请公布日期
2004.02.20
申请号
RU20030131779U
申请日期
2003.11.04
申请人
发明人
分类号
E21B33/14
主分类号
E21B33/14
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代理人
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