Automobile radio receiver volume control,申请号US19390267577-传众专利搜索

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发明名称	Automobile radio receiver volume control
摘要
申请公布号	US2216520(A)	申请公布日期	1940.10.01
申请号	US19390267577	申请日期	1939.04.13
申请人	RADIO CORPORATION OF AMERICA	发明人	REINARTZ JOHN L.
分类号	H03G3/24	主分类号	H03G3/24
代理机构		代理人
主权项
地址

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