Improvements in devices for emitting luminous signals,申请号GB19380024692-传众专利搜索

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发明名称	Improvements in devices for emitting luminous signals
摘要
申请公布号	GB499472(A)	申请公布日期	1939.01.24
申请号	GB19380024692	申请日期	1938.08.22
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	G08B5/00;H01J61/52;H01J61/82	主分类号	G08B5/00
代理机构		代理人
主权项
地址

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