Improvements in or relating to electron tubes,申请号GB19540006663-传众专利搜索

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发明名称	Improvements in or relating to electron tubes
摘要
申请公布号	GB782100(A)	申请公布日期	1957.09.04
申请号	GB19540006663	申请日期	1954.03.08
申请人	EITEL-MCCULLOUGH, INC.	发明人	MCCULLOUGH JACK A.
分类号	H01J21/36	主分类号	H01J21/36
代理机构		代理人
主权项
地址

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