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发明名称
Сервомеханизм автомата подачи долота при бурении скважин
摘要
申请公布号
SU126084(A1)
申请公布日期
1959.11.30
申请号
SU19590631165
申请日期
1959.06.16
申请人
SUD I.I.
发明人
SUD I.I.
分类号
E21B44/02;E21B3/00
主分类号
E21B44/02
代理机构
代理人
主权项
地址
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