Improvements in or relating to thermionic valve circuits,申请号GB19390023556-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	GB532066(A)	申请公布日期	1941.01.16
申请号	GB19390023556	申请日期	1939.08.15
申请人	SIEMENS BROTHERS & CO. LIMITED;DOUGLAS PERCY LONG;CHARLES LEONARD PETERS;LESLIE SPICER CRUTCH	发明人
分类号	H03F1/54	主分类号	H03F1/54
代理机构		代理人
主权项
地址

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