Improvements in or relating to electronic valves,申请号GB19440022073-传众专利搜索

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发明名称	Improvements in or relating to electronic valves
摘要
申请公布号	GB568437(A)	申请公布日期	1945.04.04
申请号	GB19440022073	申请日期	1943.03.29
申请人	BERNHARD ERBER	发明人
分类号	H01J19/46	主分类号	H01J19/46
代理机构		代理人
主权项
地址

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