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发明名称
DEVICE FOR CONNECTING COMPRESSED AIR LINE TO DRILL ROD
摘要
申请公布号
SU991042(A1)
申请公布日期
1983.01.23
申请号
SU19813330560
申请日期
1981.08.25
申请人
VNI PK I GORNORUDNOGO MASHINOSTROENIYA
发明人
BOVDUJ BORIS G,SU;GRITSAEV NIKOLAJ T,SU;KOBOZEV VLADIMIR N,SU;ZERNYUKOV SERGEJ E,SU
分类号
E21B17/02;E21B21/02;(IPC1-7):E21C3/34
主分类号
E21B17/02
代理机构
代理人
主权项
地址
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