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发明名称
DRILL BIT SUPPORT FOR AIR DRILLING
摘要
申请公布号
SU1645436(A1)
申请公布日期
1991.04.30
申请号
SU19884429226
申请日期
1988.04.12
申请人
DROGOBYCHSKIJ DOLOTNYJ ZAVOD
发明人
PEREGUDOV ALEKSANDR A,SU;BIRMAN VALERIJ A,SU;ZHIDOVTSEV NIKOLAJ A,SU;BIKBULATOV IREK K,SU;GINZBURG EDUARD S,SU;YAKIMCHUK ULYAN N,SU;GUK ROMAN I,SU;VORONKO VLADIMIR M,SU
分类号
E21B10/46;E21B10/22
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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