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发明名称
ROLLER BIT
摘要
申请公布号
SU1170107(A1)
申请公布日期
1985.07.30
申请号
SU19843698695
申请日期
1984.02.09
申请人
SPETSIALIZIROVANNOE K BYURO "GIDROGEOTEKHNIKA" PROIZVODSTVENNOGO OBEDINENIYA "UZBEKGIDROGEOLOGIYA"
发明人
KHARCHENKO ALEKSANDR E,SU;ALIMOV MIRZAKHAKIM S,SU;STEKLYANOV BORIS L,SU
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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