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发明名称
DEVICE FOR WELL HEATING AND METHOD FOR MAINTENANCE OF WELL HEATING CONDITIONS
摘要
申请公布号
RU2029069(C1)
申请公布日期
1995.02.20
申请号
RU19920012876
申请日期
1992.12.16
申请人
SAMGIN YURIJ SERGEEVICH
发明人
SAMGIN YURIJ S;LINNIK LEV N
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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