Improvements in or relating to thermionic amplifying systems,申请号GB19290039445-传众专利搜索

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发明名称	Improvements in or relating to thermionic amplifying systems
摘要
申请公布号	GB343250(A)	申请公布日期	1931.02.19
申请号	GB19290039445	申请日期	1929.12.24
申请人	ARCTURUS RADIO TUBE COMPANY	发明人
分类号	H03F1/08;H03F1/16	主分类号	H03F1/08
代理机构		代理人
主权项
地址

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