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发明名称
PERFORATOR
摘要
申请公布号
SU692995(A1)
申请公布日期
1979.10.25
申请号
SU19782603957
申请日期
1978.04.12
申请人
NI GORNORUDNYJ I (NIGRI);VINNITSKIJ POLT INSTITUT
发明人
CHERNENKO ALEKSANDR R,SU;PONOMARCHUK ANATOLIJ F,SU;YURCHENKO NIKOLAJ A,SU;STOROZHUK NIKOLAJ M,SU
分类号
E21B1/30;B25D17/02;(IPC1-7):E21C3/04;E21C3/24
主分类号
E21B1/30
代理机构
代理人
主权项
地址
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