DEEP-WELL DRILLING MACHINE,申请号SU19742081201-传众专利搜索

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发明名称	DEEP-WELL DRILLING MACHINE
摘要
申请公布号	SU607969(A1)	申请公布日期	1978.05.25
申请号	SU19742081201	申请日期	1974.10.01
申请人	INST GORNOGO DELA SO AN SSSR	发明人	BELYAEV NIKOLAJ A,SU;ESIN NIKOLAJ N,SU;KUPREEV IVAN A,SU
分类号	E21B4/14;(IPC1-7):E21C3/24	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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