Device for ascertaining the gradation of gradated series of blackenings in photographic layers,申请号GB19300018778-传众专利搜索

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发明名称	Device for ascertaining the gradation of gradated series of blackenings in photographic layers
摘要
申请公布号	GB353641(A)	申请公布日期	1931.07.30
申请号	GB19300018778	申请日期	1930.06.19
申请人	I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT	发明人
分类号	G03C5/02	主分类号	G03C5/02
代理机构		代理人
主权项
地址

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