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发明名称
Устройство для автоматического долива скважин при подъеме бурового инструмента
摘要
申请公布号
SU125214(A1)
申请公布日期
1959.11.30
申请号
SU19590624503
申请日期
1959.04.07
申请人
BATASHOV N.N.;VOJLOCHNIKOV A.A.;ELISTRATOV V.S.;NAZAROV I.V.
发明人
BATASHOV N.N.;VOJLOCHNIKOV A.A.;ELISTRATOV V.S.;NAZAROV I.V.
分类号
E21B21/08
主分类号
E21B21/08
代理机构
代理人
主权项
地址
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