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发明名称
ELECTROTHERMOMECHANICAL DRILLING METHOD AND APPARATUS
摘要
申请公布号
RU2038475(C1)
申请公布日期
1995.06.27
申请号
SU19925036112
申请日期
1992.04.03
申请人
SANKT-PETERBURGSKIJ GOSUDARSTVENNYJ GORNYJ INSTITUT IM.G.V.PLEKHANOVA (TEKHNICHESKIJ UNIVERSITET)
发明人
SOLOVEV GEORGIJ N;KUDRYASHOV BORIS B;LITVINENKO VLADIMIR S
分类号
E21C37/18;E21B7/15;(IPC1-7):E21C37/18
主分类号
E21C37/18
代理机构
代理人
主权项
地址
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