Automatic volume control systems for vacuum-tube amplifiers,申请号GB19360020080-传众专利搜索

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发明名称	Automatic volume control systems for vacuum-tube amplifiers
摘要
申请公布号	GB478584(A)	申请公布日期	1938.01.20
申请号	GB19360020080	申请日期	1936.07.20
申请人	JOHNSON LABORATORIES, INCORPORATED	发明人
分类号	H03G3/22	主分类号	H03G3/22
代理机构		代理人
主权项
地址

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