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发明名称
DEVICE FOR ROTARY DRILLING OF BLAST HOLES
摘要
申请公布号
RU2053345(C1)
申请公布日期
1996.01.27
申请号
SU19925044102
申请日期
1992.05.26
申请人
SHAMSHIN VLADIMIR N
发明人
SHAMSHIN VLADIMIR N
分类号
E21B10/42;(IPC1-7):E21B10/42
主分类号
E21B10/42
代理机构
代理人
主权项
地址
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