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发明名称
ROLLER-BIT DRILL
摘要
申请公布号
SU1541370(A1)
申请公布日期
1990.02.07
申请号
SU19864186193
申请日期
1986.11.21
申请人
MO I NEFTI GAZA IM.I.M.GUBKINA
发明人
ZHIDOVTSEV NIKOLAJ A,SU;BIKBULATOV IREK K,SU;GINZBURG EDUARD S,SU;VASILEV ANATOLIJ V,SU;SABLUKOV BORIS B,SU;MATVEEV GRIGORIJ I,SU;POROZOV EVGENIJ M,SU;BUDIN VLADIMIR P,SU;MELNIK SERGEJ V,SU
分类号
E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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