Variable gain audio amplifier system and method,申请号US19430503970-传众专利搜索

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发明名称	Variable gain audio amplifier system and method
摘要
申请公布号	US2379484(A)	申请公布日期	1945.07.03
申请号	US19430503970	申请日期	1943.09.27
申请人	RADIO CORPORATION OF AMERICA	发明人	HAYNES ROBERT L.
分类号	H03G7/00	主分类号	H03G7/00
代理机构		代理人
主权项
地址

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