Coated grid for electron discharge tubes,申请号US19500187098-传众专利搜索

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发明名称	Coated grid for electron discharge tubes
摘要
申请公布号	US2556864(A)	申请公布日期	1951.06.12
申请号	US19500187098	申请日期	1950.09.27
申请人	GENERAL ELECTRIC COMPANY	发明人	APKER LE ROY
分类号	H01J19/30	主分类号	H01J19/30
代理机构		代理人
主权项
地址

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