Improvements in or relating to electron discharge devices,申请号GB19530008013-传众专利搜索

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发明名称	Improvements in or relating to electron discharge devices
摘要
申请公布号	GB752452(A)	申请公布日期	1956.07.11
申请号	GB19530008013	申请日期	1953.03.24
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人	KREUCHEN KARL HEINZ
分类号	H01J23/027	主分类号	H01J23/027
代理机构		代理人
主权项
地址

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