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发明名称
Экономичный способ бурени скважин
摘要
申请公布号
RU2002111030(A)
申请公布日期
2003.10.27
申请号
RU20020111030
申请日期
2002.04.25
申请人
Шилов Андрей Валентинович
发明人
Шилов Андрей Валентинович
分类号
E21B7/00
主分类号
E21B7/00
代理机构
代理人
主权项
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