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发明名称
Способ и долото для отбора ориентированного керна из бурящихся скважин
摘要
申请公布号
SU78757(A1)
申请公布日期
1949.11.30
申请号
SU19490397197
申请日期
1949.05.16
申请人
KARGOV F.A.;NECHAJ A.M.;STROTSKIJ V.N.;STROTSKIJ G.N.
发明人
KARGOV F.A.;NECHAJ A.M.;STROTSKIJ V.N.;STROTSKIJ G.N.
分类号
E21B25/16
主分类号
E21B25/16
代理机构
代理人
主权项
地址
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