Well flow device,申请号US19450610571-传众专利搜索

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发明名称	Well flow device
摘要
申请公布号	US2573110(A)	申请公布日期	1951.10.30
申请号	US19450610571	申请日期	1945.08.13
申请人	MERLA TOOL CORPORATION	发明人	ROBISON JAY L.
分类号	E21B43/12	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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