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经营范围
发明名称
AXIAL BEARING OF DOWNHOLE MOTOR
摘要
申请公布号
RU1790657(C)
申请公布日期
1993.01.23
申请号
SU19914937171
申请日期
1991.04.15
申请人
KAMSKIJ NII KOMPLEKSNYKH ISSLEDOVANIJ GLUBOKIKH SVERKHGLUBOKIKH SKVAZHIN
发明人
KOSNYREV BORIS A,SU;VERSHININ ALEKSANDR V,SU;SAFRONOV ALEKSANDR V,SU
分类号
E21B4/00
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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