Centrifugal oil well pump,申请号US19310575626-传众专利搜索

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发明名称	Centrifugal oil well pump
摘要
申请公布号	US1930381(A)	申请公布日期	1933.10.10
申请号	US19310575626	申请日期	1931.11.17
申请人	MAGIC CITY SPECIALTY COMPANY	发明人	BOONE CHARLES G.
分类号	E21B43/12;F04D1/06;F04D13/04;F04D29/44	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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