Improvements in or relating to electron discharge tubes,申请号GB19390027030-传众专利搜索

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发明名称	Improvements in or relating to electron discharge tubes
摘要
申请公布号	GB533046(A)	申请公布日期	1941.02.05
申请号	GB19390027030	申请日期	1939.10.02
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY, LIMITED	发明人
分类号	H03F3/54;H03H7/00	主分类号	H03F3/54
代理机构		代理人
主权项
地址

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