Sealed Bearing Assembly Used in Earth Drilling,申请号CA19932102984-传众专利搜索

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发明名称	Sealed Bearing Assembly Used in Earth Drilling
摘要
申请公布号	CA2102984(A1)	申请公布日期	1995.05.13
申请号	CA19932102984	申请日期	1993.11.12
申请人	VECTOR OIL TOOL LTD.	发明人	WENZEL, KENNETH H.
分类号	E21B4/00;(IPC1-7):E21B7/00;E21B4/02	主分类号	E21B4/00
代理机构		代理人
主权项
地址

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