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发明名称
СОЕДИНЕНИЕ ДЛЯ БУРИЛЬНЫХ ТРУБ
摘要
申请公布号
RU43298(U1)
申请公布日期
2005.01.10
申请号
RU20030135396U
申请日期
2003.12.16
申请人
发明人
分类号
E21B17/02
主分类号
E21B17/02
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代理人
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地址
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