APPARATUS FOR DRILLING BOREHOLES,申请号SU19772460399-传众专利搜索

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发明名称	APPARATUS FOR DRILLING BOREHOLES
摘要
申请公布号	SU691550(A1)	申请公布日期	1979.10.15
申请号	SU19772460399	申请日期	1977.03.09
申请人	MOSEV ALEKSANDR F,SU	发明人	MOSEV ALEKSANDR F,SU
分类号	E21B7/00;E21B17/00;(IPC1-7):E21B7/00	主分类号	E21B7/00
代理机构		代理人
主权项
地址

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