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发明名称
DRILL BIT
摘要
申请公布号
RU2096577(C1)
申请公布日期
1997.11.20
申请号
RU19960112876
申请日期
1996.06.27
申请人
YASASHIN VITALIJ ANATOLEVICH
发明人
YASASHIN VITALIJ A;MAKAROV NIKOLAJ G;NAZAROV ALEKSANDR M;SERIKOV DMITRIJ YU;URALEV VALERIJ B;BUYANOVSKIJ ILYA N
分类号
E21B10/18;(IPC1-7):E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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