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经营范围
发明名称
BOREHOLE EXPANDER
摘要
申请公布号
SU1472615(A1)
申请公布日期
1989.04.15
申请号
SU19874174008
申请日期
1987.01.04
申请人
SEVERO-KAVKAZSKOGO GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
BOSENKO ANATOLIJ A,SU;SHCHUKIN EVGENIJ N,SU;MAKUSHENKO YURIJ B,SU;AVANESYAN VALERIJ S,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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