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发明名称
Гидравлическое устройство для бурения скважин
摘要
申请公布号
SU78839(A1)
申请公布日期
1948.11.30
申请号
SU19480382236
申请日期
1948.07.27
申请人
KHORESHEV O.V.;SHOKHRIN Z.O.
发明人
KHORESHEV O.V.;SHOKHRIN Z.O.
分类号
E21B4/14
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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