Improvements in directional lighting installations,申请号GB19400007048-传众专利搜索

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发明名称	Improvements in directional lighting installations
摘要
申请公布号	GB537165(A)	申请公布日期	1941.06.11
申请号	GB19400007048	申请日期	1940.04.18
申请人	PHILIPS LAMPS LIMITED	发明人
分类号	B64F1/20	主分类号	B64F1/20
代理机构		代理人
主权项
地址

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