Improvements in electric discharge tubes and devices employing such tubes,申请号GB19370006963-传众专利搜索

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发明名称	Improvements in electric discharge tubes and devices employing such tubes
摘要
申请公布号	GB475467(A)	申请公布日期	1937.11.19
申请号	GB19370006963	申请日期	1937.03.09
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H01J21/20	主分类号	H01J21/20
代理机构		代理人
主权项
地址

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