A DEVICE FOR DRILLING DEEP WELLS.,申请号AR19840296973-传众专利搜索

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发明名称	A DEVICE FOR DRILLING DEEP WELLS.
摘要
申请公布号	AR243006(A1)	申请公布日期	1993.06.30
申请号	AR19840296973	申请日期	1984.06.21
申请人	VIOLANTE, JOSE	发明人
分类号	E21B17/10;(IPC1-7):E21B17/10	主分类号	E21B17/10
代理机构		代理人
主权项
地址

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