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发明名称
CONE DRILL BIT
摘要
申请公布号
RU2049904(C1)
申请公布日期
1995.12.10
申请号
SU19853941777
申请日期
1985.08.01
申请人
VOSTOCHNO-SIBIRSKIJ NAUCHNO-ISSLEDOVATELSKIJ INSTITUT GEOLOGII, GEOFIZIKI I MINERALNOGO SYRYA
发明人
ZELTSER PAVEL YA;MARKOV ARLEN P;ABRAMSON MIKHAIL G;GRISKIN EFIM N;YAKIMCHUK ULYAN N
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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