Scraper for cleaning the riser of a petroleum pump,申请号US19600009596-传众专利搜索

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发明名称	Scraper for cleaning the riser of a petroleum pump
摘要
申请公布号	US3065795(A)	申请公布日期	1962.11.27
申请号	US19600009596	申请日期	1960.02.18
申请人	FIRMA LEMFORDER METALLWARENGESELLSCHAFT M.B.H.	发明人	BARTEL GUNTER
分类号	E21B37/02	主分类号	E21B37/02
代理机构		代理人
主权项
地址

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