Fluid-operated free pump with packing device,申请号US19500138909-传众专利搜索

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发明名称	Fluid-operated free pump with packing device
摘要
申请公布号	US2652779(A)	申请公布日期	1953.09.22
申请号	US19500138909	申请日期	1950.01.16
申请人	DRESSER EQUIPMENT CO.	发明人	MCARTHUR RALPH F.
分类号	F04B47/00	主分类号	F04B47/00
代理机构		代理人
主权项
地址

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