Safety deep well pump assembly,申请号US19280312443-传众专利搜索

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发明名称	Safety deep well pump assembly
摘要
申请公布号	US1878372(A)	申请公布日期	1932.09.20
申请号	US19280312443	申请日期	1928.10.15
申请人	CHARLES A. DAILEY	发明人	BOX JOHN V.
分类号	E21B19/10;E21B43/12;F04B53/00	主分类号	E21B19/10
代理机构		代理人
主权项
地址

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