Improvements in or relating to indirectly heated cathodes for electron discharge tubes,申请号GB19340012783-传众专利搜索

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发明名称	Improvements in or relating to indirectly heated cathodes for electron discharge tubes
摘要
申请公布号	GB430853(A)	申请公布日期	1935.06.26
申请号	GB19340012783	申请日期	1934.04.27
申请人	N.V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H01J1/26	主分类号	H01J1/26
代理机构		代理人
主权项
地址

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