Electroacoustic delay system,申请号US19480024391-传众专利搜索

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发明名称	Electroacoustic delay system
摘要
申请公布号	US2517819(A)	申请公布日期	1950.08.08
申请号	US19480024391	申请日期	1948.04.30
申请人	RADIO CORPORATION OF AMERICA	发明人	YOUNG CHARLES JACOB
分类号	H04B3/04	主分类号	H04B3/04
代理机构		代理人
主权项
地址

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