INSERT FOR DRILLING UNIT,申请号CAD906991-传众专利搜索

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发明名称	INSERT FOR DRILLING UNIT
摘要
申请公布号	CA906991(A)	申请公布日期	1972.08.08
申请号	CAD906991	申请日期
申请人	FRANK E. STEBLEY	发明人	FRANK E. STEBLEY
分类号	E21B10/52;E21B10/56;(IPC1-7):E21B10/52	主分类号	E21B10/52
代理机构		代理人
主权项
地址

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