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发明名称
Агрегат для бурения цилиндрических шахт
摘要
申请公布号
SU104344(A1)
申请公布日期
1955.11.30
申请号
SU19500414928
申请日期
1950.03.17
申请人
BORISOV A.M.;CHUMAK A.V.
发明人
BORISOV A.M.;CHUMAK A.V.
分类号
E21B27/00
主分类号
E21B27/00
代理机构
代理人
主权项
地址
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