Improvements in or relating to shades or screens for lighting devices,申请号GB19390032776-传众专利搜索

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发明名称	Improvements in or relating to shades or screens for lighting devices
摘要
申请公布号	GB537487(A)	申请公布日期	1941.06.24
申请号	GB19390032776	申请日期	1939.12.22
申请人	CLEMENT HELLEGERS	发明人
分类号	F21V11/00;F21V11/16	主分类号	F21V11/00
代理机构		代理人
主权项
地址

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