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发明名称
ROCK CUTTING TOOL
摘要
申请公布号
RU1796009(C)
申请公布日期
1993.02.15
申请号
SU19904792967
申请日期
1990.01.04
申请人
FEDOROV YURIJ S,SU
发明人
FEDOROV YURIJ S,SU
分类号
E21B10/48
主分类号
E21B10/48
代理机构
代理人
主权项
地址
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