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发明名称
Устройство для очистки скважин
摘要
申请公布号
RU33397(U1)
申请公布日期
2003.10.20
申请号
RU20030123931U
申请日期
2003.08.05
申请人
发明人
分类号
E21B37/00
主分类号
E21B37/00
代理机构
代理人
主权项
地址
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