Cathodes for electron discharge devices,申请号US19550488802-传众专利搜索

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发明名称	Cathodes for electron discharge devices
摘要
申请公布号	US2822499(A)	申请公布日期	1958.02.04
申请号	US19550488802	申请日期	1955.02.17
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	LYNCH ROBERT T.
分类号	H01J23/05	主分类号	H01J23/05
代理机构		代理人
主权项
地址

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