LOCK FOR COUPLING DRILL RODS,申请号SU19782687187-传众专利搜索

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发明名称	LOCK FOR COUPLING DRILL RODS
摘要
申请公布号	SU794170(A1)	申请公布日期	1981.01.07
申请号	SU19782687187	申请日期	1978.11.23
申请人	UK NI PK I PODZEMNOJ GIDRAVLICHESKOJ DOBYCHI UGLYA	发明人	DRUPOV NIKOLAJ A,SU;LUKYANCHENKO EVGENIJ S,SU
分类号	E21B17/04;F16L37/22;(IPC1-7):E21B17/04	主分类号	E21B17/04
代理机构		代理人
主权项
地址

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