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发明名称
MAKESHIFT DRILL
摘要
申请公布号
SU1763648(A1)
申请公布日期
1992.09.23
申请号
SU19904877881
申请日期
1990.10.25
申请人
VNI PK I DOBYCHI UGLYA GIDRAV
发明人
ATRUSHKEVICH ARKADIJ A,SU;GALKIN VLADIMIR N,SU;LOKTIONOV ANDREJ A,SU;CHIKIN VIKTOR G,SU
分类号
E21B3/00;E21B15/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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