Improvements in or relating to the manufacture of metal screens and electron discharge devices comprising such screens,申请号GB19450022273-传众专利搜索

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发明名称	Improvements in or relating to the manufacture of metal screens and electron discharge devices comprising such screens
摘要
申请公布号	GB598994(A)	申请公布日期	1948.03.02
申请号	GB19450022273	申请日期	1945.08.29
申请人	HERBERT EDWARD HOLMAN	发明人
分类号	B21D47/00;H01J9/14;H01J19/00	主分类号	B21D47/00
代理机构		代理人
主权项
地址

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