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经营范围
发明名称
Гидроэлектробур
摘要
申请公布号
SU139629(A1)
申请公布日期
1961.11.30
申请号
SU19610693158
申请日期
1961.01.10
申请人
发明人
MININ A.A.;BRYUSHKOV N.I.;POGARSKIJ A.A.;TERENTEV E.I.;CHEFRANOV K.A.;YASASHIN A.M.
分类号
E21B21/00;E21B4/04;E21B37/00
主分类号
E21B21/00
代理机构
代理人
主权项
地址
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