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发明名称
TOOL FOR ROTARY DRILLING OF BLAST HOLES
摘要
申请公布号
RU2055145(C1)
申请公布日期
1996.02.27
申请号
RU19920009000
申请日期
1992.11.27
申请人
SHAMSHIN VLADIMIR N
发明人
SHAMSHIN VLADIMIR N
分类号
E21B17/22;E21B10/44;(IPC1-7):E21B17/22
主分类号
E21B17/22
代理机构
代理人
主权项
地址
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