Improvements in or relating to color filters,申请号GB19470013223-传众专利搜索

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发明名称	Improvements in or relating to color filters
摘要
申请公布号	GB637310(A)	申请公布日期	1950.05.17
申请号	GB19470013223	申请日期	1947.05.16
申请人	INTERNATIONAL POLAROID CORPORATION	发明人
分类号	G02B27/28;G02F1/23	主分类号	G02B27/28
代理机构		代理人
主权项
地址

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