Improvements in or relating to thermionic valve amplifiers,申请号GB19390014922-传众专利搜索

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发明名称	Improvements in or relating to thermionic valve amplifiers
摘要
申请公布号	GB529590(A)	申请公布日期	1940.11.25
申请号	GB19390014922	申请日期	1939.05.19
申请人	ARTHUR HENRY COOPER;ALAN DOWER BLUMLEIN	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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