Improvements relating to the construction and assembly of electron discharge tubes,申请号GB19400014467-传众专利搜索

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发明名称	Improvements relating to the construction and assembly of electron discharge tubes
摘要
申请公布号	GB573209(A)	申请公布日期	1945.11.12
申请号	GB19400014467	申请日期	1940.09.23
申请人	JOHN HENRY OWEN HARRIES	发明人
分类号	H01J19/46;H01J29/82	主分类号	H01J19/46
代理机构		代理人
主权项
地址

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