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经营范围
发明名称
CORE DRILLING TOOL
摘要
申请公布号
SU1751290(A1)
申请公布日期
1992.07.30
申请号
SU19904837488
申请日期
1990.05.14
申请人
BELOV ANDREJ M,SU;BUDYUKOV YURIJ E,SU
发明人
BELOV ANDREJ M,SU;BUDYUKOV YURIJ E,SU
分类号
E21B10/66
主分类号
E21B10/66
代理机构
代理人
主权项
地址
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