DRILLING TOOL FOR SPREADING WELLS,申请号SU19792771849-传众专利搜索

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发明名称	DRILLING TOOL FOR SPREADING WELLS
摘要
申请公布号	SU857419(A1)	申请公布日期	1981.08.23
申请号	SU19792771849	申请日期	1979.05.30
申请人	GOJ VLADIMIR L,SU	发明人	GOJ VLADIMIR L,SU
分类号	E21B7/28;(IPC1-7):E21B7/28	主分类号	E21B7/28
代理机构		代理人
主权项
地址

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