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发明名称
HYDRAULIC ROCK DRILL
摘要
申请公布号
SU1070304(A1)
申请公布日期
1984.01.30
申请号
SU19823520610
申请日期
1982.12.13
申请人
NI GORNORUDNYJ INSTITUT
发明人
KOZYREV SERGEJ A,SU
分类号
E21B4/02;(IPC1-7):E21C1/00
主分类号
E21B4/02
代理机构
代理人
主权项
地址
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