Oil well pump,申请号US19560580066-传众专利搜索

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发明名称	Oil well pump
摘要
申请公布号	US2814993(A)	申请公布日期	1957.12.03
申请号	US19560580066	申请日期	1956.04.23
申请人	SCHMIDT BENJAMIN F	发明人	SCHMIDT BENJAMIN F.
分类号	F04B43/08;F04B43/107	主分类号	F04B43/08
代理机构		代理人
主权项
地址

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