Improvements in and relating to circular electric discharge lamps,申请号GB19480029453-传众专利搜索

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发明名称	Improvements in and relating to circular electric discharge lamps
摘要
申请公布号	GB657709(A)	申请公布日期	1951.09.26
申请号	GB19480029453	申请日期	1948.11.12
申请人	THE BRITISH THOMSON-HOUSTON COMPANY LIMITED	发明人
分类号	H01J9/30	主分类号	H01J9/30
代理机构		代理人
主权项
地址

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