Improvements in or relating to thermionic amplifiers,申请号GB19340016280-传众专利搜索

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发明名称	Improvements in or relating to thermionic amplifiers
摘要
申请公布号	GB417440(A)	申请公布日期	1934.10.04
申请号	GB19340016280	申请日期	1934.05.31
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H03F1/04;H03G7/02	主分类号	H03F1/04
代理机构		代理人
主权项
地址

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