Air volume controlling device for water storage tanks,申请号US19290362620-传众专利搜索

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发明名称	Air volume controlling device for water storage tanks
摘要
申请公布号	US2004417(A)	申请公布日期	1935.06.11
申请号	US19290362620	申请日期	1929.05.13
申请人	PENN ELECTRIC SWITCH CO.	发明人	PENN ALBERT
分类号	F04B11/00;F04B49/02	主分类号	F04B11/00
代理机构		代理人
主权项
地址

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