Improvements relating to indirectly heated cathodes for electron discharge devices,申请号GB19330004800-传众专利搜索

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发明名称	Improvements relating to indirectly heated cathodes for electron discharge devices
摘要
申请公布号	GB415398(A)	申请公布日期	1934.08.16
申请号	GB19330004800	申请日期	1933.02.16
申请人	INTERNATIONAL GENERAL ELECTRIC COMPANY	发明人
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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