Improvements in electron valve amplifiers,申请号GB19370033339-传众专利搜索

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发明名称	Improvements in electron valve amplifiers
摘要
申请公布号	GB485995(A)	申请公布日期	1938.05.27
申请号	GB19370033339	申请日期	1937.12.02
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	发明人
分类号	H03F1/36	主分类号	H03F1/36
代理机构		代理人
主权项
地址

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