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发明名称
DEEP WELL ROCK DRILL
摘要
申请公布号
SU1008438(A1)
申请公布日期
1983.03.30
申请号
SU19813375850
申请日期
1981.12.30
申请人
SIDORENKO PAVEL,SU;MATSIEVSKIJ VIKTOR P,SU;DERUSOV VLADIMIR P,SU
发明人
SIDORENKO PAVEL I,SU;MATSIEVSKIJ VIKTOR P,SU;DERUSOV VLADIMIR P,SU
分类号
E21B4/14;(IPC1-7):E21C3/24
主分类号
E21B4/14
代理机构
代理人
主权项
地址
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