Filter signal,申请号US19500159053-传众专利搜索

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发明名称	Filter signal
摘要
申请公布号	US2669707(A)	申请公布日期	1954.02.16
申请号	US19500159053	申请日期	1950.04.29
申请人	BOWSER, INC.	发明人	EHRMAN FREDERICK S.
分类号	B01D35/143;F16N29/04;F16N39/06;G08B5/02	主分类号	B01D35/143
代理机构		代理人
主权项
地址

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