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发明名称
УСТРОЙСТВО ДЛЯ ЗАЖИМА БУРОВОЙ КОЛОННЫ
摘要
申请公布号
RU38818(U1)
申请公布日期
2004.07.10
申请号
RU20040101480U
申请日期
2004.01.22
申请人
发明人
分类号
E21B19/10;(IPC1-7):E21B19/10
主分类号
E21B19/10
代理机构
代理人
主权项
地址
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