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发明名称
ROLLING CUTTER OF DRILL BIT
摘要
申请公布号
RU2001233(C1)
申请公布日期
1993.10.15
申请号
SU19914900712
申请日期
1991.01.09
申请人
SMIRNOV VYACHESLAV G;TRAVKIN VITALIJ S;FILATOV BORIS P;POLANSKIJ GRIGORIJ A
发明人
SMIRNOV VYACHESLAV G;TRAVKIN VITALIJ S;FILATOV BORIS P;POLANSKIJ GRIGORIJ A
分类号
E21B10/22;(IPC1-7):E21B10/22
主分类号
E21B10/22
代理机构
代理人
主权项
地址
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