Ball latch wash-over spear apparatus,申请号US19590804975-传众专利搜索

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发明名称	Ball latch wash-over spear apparatus
摘要
申请公布号	US3070170(A)	申请公布日期	1962.12.25
申请号	US19590804975	申请日期	1959.04.08
申请人	WASH OVERSHOT AND SPEAR ENGINEERS, INCORPORATED	发明人	SR. FRANKLIN L. LE BUS,;COX JESSE J.;WARE CECIL
分类号	E21B31/20	主分类号	E21B31/20
代理机构		代理人
主权项
地址

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