Improvements in or relating to electric discharge tubes,申请号GB19470009314-传众专利搜索

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发明名称	Improvements in or relating to electric discharge tubes
摘要
申请公布号	GB646134(A)	申请公布日期	1950.11.15
申请号	GB19470009314	申请日期	1947.04.08
申请人	PHILIPS LAMPS LIMITED	发明人
分类号	H01J13/48	主分类号	H01J13/48
代理机构		代理人
主权项
地址

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