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发明名称
ROLLER BIT
摘要
申请公布号
RU2012764(C1)
申请公布日期
1994.05.15
申请号
SU19904888141
申请日期
1990.12.06
申请人
MAGNITOGORSKIJ GORNO-METALLURGICHESKIJ INSTITUT IM.G.I.NOSOVA
发明人
STOROZHENKO ARKADIJ M;MUKHAMETZYANOV ARSEN F
分类号
E21B10/24;(IPC1-7):E21B10/24
主分类号
E21B10/24
代理机构
代理人
主权项
地址
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