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发明名称
BOREHOLE TOOL FOR ELECTRIC-PULSE DRILLING HOLES
摘要
申请公布号
RU699853(C)
申请公布日期
1994.04.15
申请号
SU19701521994
申请日期
1970.07.13
申请人
NAUCHNO-ISSLEDOVATELSKIJ INSTITUT VYSOKIKH NAPRYAZHENIJ PRI TOMSKOM POLITEKHNICHESKOM INSTITUTE IM.S.M.KIROVA
发明人
KORSHUNOV G.S.;FRIMERMAN KH.S.
分类号
E21C37/18;(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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