Improvements in or relating to electronic discharge devices,申请号GB19440007264-传众专利搜索

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发明名称	Improvements in or relating to electronic discharge devices
摘要
申请公布号	GB665341(A)	申请公布日期	1952.01.23
申请号	GB19440007264	申请日期	1944.04.19
申请人	PHILIPS LAMPS LIMITED	发明人
分类号	H01J25/00;H01J25/42;H03C3/30;H03K7/04	主分类号	H01J25/00
代理机构		代理人
主权项
地址

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