Improvement in electron discharge device,申请号GB19460028467-传众专利搜索

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发明名称	Improvement in electron discharge device
摘要
申请公布号	GB650935(A)	申请公布日期	1951.03.07
申请号	GB19460028467	申请日期	1946.09.23
申请人	SYLVANIA ELECTRIC PRODUCTS INC.	发明人
分类号	H01J25/56	主分类号	H01J25/56
代理机构		代理人
主权项
地址

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