Improvements in or relating to thermionic amplifying circuits,申请号GB19310008896-传众专利搜索

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发明名称	Improvements in or relating to thermionic amplifying circuits
摘要
申请公布号	GB364949(A)	申请公布日期	1932.01.14
申请号	GB19310008896	申请日期	1931.03.23
申请人	SIEMENS & HALSKE AKTIENGESELLSCHAFT	发明人
分类号	H03F1/08;H03F3/02	主分类号	H03F1/08
代理机构		代理人
主权项
地址

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