Improvements in downhole pumps,申请号GB19970003854-传众专利搜索

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发明名称	Improvements in downhole pumps
摘要
申请公布号	GB9703854(D0)	申请公布日期	1997.04.16
申请号	GB19970003854	申请日期	1997.02.25
申请人	WEIR PUMPS LIMITED	发明人
分类号	E21B43/12;E21B43/20	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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