Selective filtering system,申请号US19430488182-传众专利搜索

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发明名称	Selective filtering system
摘要
申请公布号	US2434937(A)	申请公布日期	1948.01.27
申请号	US19430488182	申请日期	1943.05.24
申请人	FEDERAL TELEPHONE AND RADIO CORPORATION	发明人	LABIN EMILE;GRIEG DONALD D.
分类号	H04B1/10	主分类号	H04B1/10
代理机构		代理人
主权项
地址

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