Improvements in gasfilled electric incandescent lamps,申请号GB19380017180-传众专利搜索

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发明名称	Improvements in gasfilled electric incandescent lamps
摘要
申请公布号	GB515704(A)	申请公布日期	1939.12.12
申请号	GB19380017180	申请日期	1938.06.09
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	H01K1/14;H01K1/34;H01K1/58	主分类号	H01K1/14
代理机构		代理人
主权项
地址

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