Junk basket with positive fluid circulation,申请号US19530384092-传众专利搜索

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发明名称	Junk basket with positive fluid circulation
摘要
申请公布号	US2797755(A)	申请公布日期	1957.07.02
申请号	US19530384092	申请日期	1953.10.05
申请人	PHILLIPS PETROLEUM COMPANY	发明人	BOBO ROY A.
分类号	E21B27/00;E21B31/08	主分类号	E21B27/00
代理机构		代理人
主权项
地址

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