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发明名称
CHUCK FOR ROCK DRILL
摘要
申请公布号
SU739231(A1)
申请公布日期
1980.06.05
申请号
SU19782631450
申请日期
1978.06.16
申请人
KONOTOPSKIJ ELEKTROMEKHANICHESKIJ ZAVOD "KRASNYJ METALLIST"
发明人
EROPUDOV IVAN P,SU
分类号
E21B17/03;(IPC1-7):E21C15/00
主分类号
E21B17/03
代理机构
代理人
主权项
地址
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