Electrically operated pumping apparatus,申请号US19300486969-传众专利搜索

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发明名称	Electrically operated pumping apparatus
摘要
申请公布号	US1924412(A)	申请公布日期	1933.08.29
申请号	US19300486969	申请日期	1930.10.07
申请人	PEARSON DONALD M	发明人	PEARSON DONALD M.
分类号	F04B17/03;F04B43/09;F04B49/12	主分类号	F04B17/03
代理机构		代理人
主权项
地址

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