Improvements in lay lights for buildings,申请号GB19340001648-传众专利搜索

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发明名称	Improvements in lay lights for buildings
摘要
申请公布号	GB431866(A)	申请公布日期	1935.07.17
申请号	GB19340001648	申请日期	1934.01.17
申请人	JAMES ERNEST MARSHALL	发明人
分类号	E04D13/03	主分类号	E04D13/03
代理机构		代理人
主权项
地址

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