Improvements in electric discharge tubes,申请号GB19340015663-传众专利搜索

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发明名称	Improvements in electric discharge tubes
摘要
申请公布号	GB418964(A)	申请公布日期	1934.11.02
申请号	GB19340015663	申请日期	1934.05.25
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H01J17/40	主分类号	H01J17/40
代理机构		代理人
主权项
地址

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