Tone compensated volume control,申请号US19500191108-传众专利搜索

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发明名称	Tone compensated volume control
摘要
申请公布号	US2637778(A)	申请公布日期	1953.05.05
申请号	US19500191108	申请日期	1950.10.20
申请人	SPRAGUE ELECTRIC COMPANY	发明人	KODAMA GEORGE T.
分类号	H01C10/46;H03G9/06	主分类号	H01C10/46
代理机构		代理人
主权项
地址

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