DIRECTLY HEATED CATHODE FOR ELECTRON TUBE,申请号GB19790011457-传众专利搜索

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发明名称	DIRECTLY HEATED CATHODE FOR ELECTRON TUBE
摘要
申请公布号	GB2018504(B)	申请公布日期	1982.03.17
申请号	GB19790011457	申请日期	1979.04.02
申请人	HITACHI LTD	发明人
分类号	H01J1/14;H01J1/15;H01J29/04;(IPC1-7):H01J29/04	主分类号	H01J1/14
代理机构		代理人
主权项
地址

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