Pump driving mechanism,申请号US19530347339-传众专利搜索

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发明名称	Pump driving mechanism
摘要
申请公布号	US2790335(A)	申请公布日期	1957.04.30
申请号	US19530347339	申请日期	1953.04.07
申请人	UNITED STATES STEEL CORPORATION	发明人	QUAYLE ALEXANDER
分类号	E21B3/02;F04B9/02;F04B17/00;F04B23/04	主分类号	E21B3/02
代理机构		代理人
主权项
地址

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