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发明名称
DEVICE FOR DRILLING HOLES
摘要
申请公布号
RU1808956(C)
申请公布日期
1993.04.15
申请号
SU19914907446
申请日期
1991.02.04
申请人
BULATOV KONSTANTIN V;EREMENKO VASILIJ F;LIGOTSKIJ NIKOLAJ V;VINYARSKIJ ROMAN V
发明人
BULATOV KONSTANTIN V;EREMENKO VASILIJ F;LIGOTSKIJ NIKOLAJ V;VINYARSKIJ ROMAN V
分类号
E21B7/24;E21B7/08;(IPC1-7):E21B7/24
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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