Электробур для бурения скважин во льду,申请号SU19590636132-传众专利搜索

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发明名称	Электробур для бурения скважин во льду
摘要
申请公布号	SU127629(A1)	申请公布日期	1959.11.30
申请号	SU19590636132	申请日期	1959.08.10
申请人	BARKOV N.I.	发明人	BARKOV N.I.
分类号	E21B4/04;E21B7/14	主分类号	E21B4/04
代理机构		代理人
主权项
地址

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