Improvements in electric discharge tubes,申请号GB19320003305-传众专利搜索

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发明名称	Improvements in electric discharge tubes
摘要
申请公布号	GB395056(A)	申请公布日期	1933.07.13
申请号	GB19320003305	申请日期	1932.02.04
申请人	RADIOAKTIENGESELLSCHAFT D. S. LOEWE;PAUL KAPTEYN	发明人
分类号	H01J21/20	主分类号	H01J21/20
代理机构		代理人
主权项
地址

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