Electron discharge devices,申请号US19420430526-传众专利搜索

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发明名称	Electron discharge devices
摘要
申请公布号	US3011084(A)	申请公布日期	1961.11.28
申请号	US19420430526	申请日期	1942.02.12
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	RONCI VICTOR L.;WALSH EDWARD J.
分类号	H01J19/46	主分类号	H01J19/46
代理机构		代理人
主权项
地址

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