Improvements in or relating to optical devices incorporating eye-protective filters,申请号GB19510008195-传众专利搜索

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发明名称	Improvements in or relating to optical devices incorporating eye-protective filters
摘要
申请公布号	GB730640(A)	申请公布日期	1955.05.25
申请号	GB19510008195	申请日期	1951.04.09
申请人	ALOIS VOGT DR.-MG.	发明人
分类号	G02B5/28	主分类号	G02B5/28
代理机构		代理人
主权项
地址

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