Improvements in or relating to thermionic valve circuits,申请号GB19390026825-传众专利搜索

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发明名称	Improvements in or relating to thermionic valve circuits
摘要
申请公布号	GB549484(A)	申请公布日期	1942.11.24
申请号	GB19390026825	申请日期	1939.09.28
申请人	TELEFONAKTIEBOLAGET L.M. ERICSSON	发明人
分类号	H03F3/52	主分类号	H03F3/52
代理机构		代理人
主权项
地址

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