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发明名称
DEVICE FOR FIXING DRILLING TOOL
摘要
申请公布号
SU1571236(A1)
申请公布日期
1990.06.15
申请号
SU19884403893
申请日期
1988.04.05
申请人
SP KT BYURO I GEOTEKHNICHESKOJ MEKHANIKI AN USSR
发明人
MOROZ MIKHAIL S,SU
分类号
E21B17/03;E21B19/06
主分类号
E21B17/03
代理机构
代理人
主权项
地址
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