Cathode structure for thermionic devices,申请号US19300487541-传众专利搜索

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发明名称	Cathode structure for thermionic devices
摘要
申请公布号	US1924375(A)	申请公布日期	1933.08.29
申请号	US19300487541	申请日期	1930.10.09
申请人	GENERAL ELECTRIC COMPANY	发明人	PIKE OTIS W.
分类号	H01J1/20	主分类号	H01J1/20
代理机构		代理人
主权项
地址

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