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发明名称
ROTARY PULSING DRILL
摘要
申请公布号
RU1828919(C)
申请公布日期
1993.07.23
申请号
SU19904889227
申请日期
1990.12.10
申请人
VSESOYUZNYJ NAUCHNO-ISSLEDOVATELSKIJ I PROEKTNO-KONSTRUKTORSKIJ INSTITUT DOBYCHI UGLYA GIDRAVLICHESKIM SPOSOBOM
发明人
GALKIN VLADIMIR N;MELNIK VLADIMIR V;CHIKIN VIKTOR G
分类号
E21B7/24
主分类号
E21B7/24
代理机构
代理人
主权项
地址
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