Improvements in or relating to light filters,申请号GB19560027878-传众专利搜索

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发明名称	Improvements in or relating to light filters
摘要
申请公布号	GB863853(A)	申请公布日期	1961.03.29
申请号	GB19560027878	申请日期	1956.09.12
申请人	EVANS ELECTROSELENIUM LIMITED;GEOFFREY CHARLES COLLINS	发明人
分类号	G02B5/22;G02B7/00	主分类号	G02B5/22
代理机构		代理人
主权项
地址

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