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发明名称
DRILL BIT
摘要
申请公布号
SU579404(A1)
申请公布日期
1977.11.05
申请号
SU19721797818
申请日期
1972.06.16
申请人
UK NI KT I SINTETICHESKIKH SVERKHTVERDYKH MATERIALOV INSTRUMENTA
发明人
BUGAEV ALEKSANDR A,SU;LIVSHITS VALERIJ N,SU;ISAKOV EDMUND ,SU;GOLOD NIKOLAJ F,SU;SVESHNIKOV IGOR A,SU
分类号
E21B10/62;(IPC1-7):E21B9/36;E21B9/16
主分类号
E21B10/62
代理机构
代理人
主权项
地址
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