SWIVELLING DEVICE FOR A DOWNHOLE ROD PUMP,申请号CA20062545637-传众专利搜索

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发明名称	SWIVELLING DEVICE FOR A DOWNHOLE ROD PUMP
摘要
申请公布号	CA2545637(A1)	申请公布日期	2007.11.03
申请号	CA20062545637	申请日期	2006.05.03
申请人	WALKER, LLOYD L.	发明人	WALKER, LLOYD
分类号	E21B31/00;E21B19/00	主分类号	E21B31/00
代理机构		代理人
主权项
地址

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