Oxide coated cathodes for electron discharge devices,申请号GB19480021357-传众专利搜索

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发明名称	Oxide coated cathodes for electron discharge devices
摘要
申请公布号	GB663635(A)	申请公布日期	1951.12.27
申请号	GB19480021357	申请日期	1948.08.13
申请人	STANDARD TELEPHONES AND CABLES LIMITED	发明人
分类号	H01J1/14	主分类号	H01J1/14
代理机构		代理人
主权项
地址

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