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经营范围
发明名称
VALVE
摘要
申请公布号
SU1490246(A1)
申请公布日期
1989.06.30
申请号
SU19874265777
申请日期
1987.05.26
申请人
SEVERO-KAVKAZSKIJ GNI PI NEFTYANOJ PROMYSHLENNOSTI
发明人
VAZHNOV EVGENIJ S,SU;KHURSHUDOV VADIM A,SU;KRAMAROV GAVRIL V,SU
分类号
E21B17/00;E21B34/10
主分类号
E21B17/00
代理机构
代理人
主权项
地址
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