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发明名称
APPARATUS FOR DRILLING WELLS
摘要
申请公布号
SU964134(A1)
申请公布日期
1982.10.07
申请号
SU19803216721
申请日期
1980.12.16
申请人
STAKHANOVSKIJ KOMMUNARSKOGO GORNO-METALLURGICHESKOGO INSTITUTA
发明人
GARTSUEV EVGENIJ M,SU;VALUKONIS GENRIKAS YU,SU;SHUTIJ NIKOLAJ I,SU
分类号
E21B4/00;(IPC1-7):E21C5/04
主分类号
E21B4/00
代理机构
代理人
主权项
地址
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