Ratio drive for metering or proportioning pumps,申请号US19470719703-传众专利搜索

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发明名称	Ratio drive for metering or proportioning pumps
摘要
申请公布号	US2638847(A)	申请公布日期	1953.05.19
申请号	US19470719703	申请日期	1947.01.02
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	MCGOWAN GAYLON H.
分类号	F04D13/02;F04D13/12	主分类号	F04D13/02
代理机构		代理人
主权项
地址

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