Improvements in or relating to electrical amplifiers,申请号GB19470008341-传众专利搜索

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发明名称	Improvements in or relating to electrical amplifiers
摘要
申请公布号	GB647196(A)	申请公布日期	1950.12.06
申请号	GB19470008341	申请日期	1947.03.27
申请人	PHILIPS LAMPS LIMITED	发明人
分类号	H01G4/12;H03C1/12;H03F3/40;H03F11/00	主分类号	H01G4/12
代理机构		代理人
主权项
地址

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