Hot cathode for cathode ray tubes,申请号GB19370007194-传众专利搜索

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发明名称	Hot cathode for cathode ray tubes
摘要
申请公布号	GB491874(A)	申请公布日期	1938.09.12
申请号	GB19370007194	申请日期	1937.03.11
申请人	RADIOAKTIENGESELLSCHAFT D. S. LOEWE	发明人
分类号	H01J29/48	主分类号	H01J29/48
代理机构		代理人
主权项
地址

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