Improvements in electrical illuminating apparatus,申请号GB19290001509-传众专利搜索

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发明名称	Improvements in electrical illuminating apparatus
摘要
申请公布号	GB328201(A)	申请公布日期	1930.04.16
申请号	GB19290001509	申请日期	1929.01.16
申请人	LOUIS ALFRED RAMSDEN	发明人
分类号	F21S8/00;G09F13/00	主分类号	F21S8/00
代理机构		代理人
主权项
地址

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