Cathode heater system for electron discharge device,申请号US19550520188-传众专利搜索

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发明名称	Cathode heater system for electron discharge device
摘要
申请公布号	US2909701(A)	申请公布日期	1959.10.20
申请号	US19550520188	申请日期	1955.07.06
申请人	WESTINGHOUSE ELECTRIC CORPORATION	发明人	OKRESS ERNEST C.
分类号	H01J1/22;H01J23/05	主分类号	H01J1/22
代理机构		代理人
主权项
地址

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