Improvements relating to thermionic valve amplifiers,申请号GB19480004359-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	GB654090(A)	申请公布日期	1951.06.06
申请号	GB19480004359	申请日期	1948.02.14
申请人	ELECTRIC AND MUSICAL INDUSTRIES LIMITED	发明人	JAMES IVANHOE JOHN PENFOUND
分类号	H03F1/50	主分类号	H03F1/50
代理机构		代理人
主权项
地址

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