LOCK JOINT OF DRILL RODS,申请号SU19802967669-传众专利搜索

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发明名称	LOCK JOINT OF DRILL RODS
摘要
申请公布号	SU924342(A1)	申请公布日期	1982.04.30
申请号	SU19802967669	申请日期	1980.07.29
申请人	NI PK I PO DOBYCHE POLEZNYKH ISKOPAEMYKH OTKRYTYM SPOSOBOM	发明人	BRYUKHOV BORIS F,SU;SUDAKOV VIKTOR P,SU;DULTSEV IVAN M,SU
分类号	E21B17/046;(IPC1-7):E21B17/04	主分类号	E21B17/046
代理机构		代理人
主权项
地址

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