Improvements in electric lighting devices,申请号GB19340022995-传众专利搜索

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发明名称	Improvements in electric lighting devices
摘要
申请公布号	GB441888(A)	申请公布日期	1936.01.29
申请号	GB19340022995	申请日期	1934.08.09
申请人	ERNEST GREETHAM	发明人
分类号	F21S13/00	主分类号	F21S13/00
代理机构		代理人
主权项
地址

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