Improvements in or relating to electric discharge tubes,申请号GB19490015514-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	GB662278(A)	申请公布日期	1951.12.05
申请号	GB19490015514	申请日期	1949.06.10
申请人	PHILIPS ELECTRICAL LIMITED	发明人
分类号	H01J19/42	主分类号	H01J19/42
代理机构		代理人
主权项
地址

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