Improvements relating to thermionic valve amplifiers,申请号GB19490015357-传众专利搜索

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发明名称	Improvements relating to thermionic valve amplifiers
摘要
申请公布号	GB678615(A)	申请公布日期	1952.09.03
申请号	GB19490015357	申请日期	1949.06.09
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人	WHITE ERIC LAWRENCE CASLING
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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