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经营范围
发明名称
DRILLING TOOL
摘要
申请公布号
SU945365(A1)
申请公布日期
1982.07.23
申请号
SU19803212940
申请日期
1980.12.08
申请人
DN OTDEL I MINERALNYKH RESURSOV
发明人
AGESHIN MIKHAIL S,SU;BOLSHAKOV VLADISLAV V,SU;SOROKIN VLADIMIR I,SU;GRISHCHENKO STANISLAV I,SU;MAKEEV ANATOLIJ I,SU
分类号
E21B25/00;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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