An improvement in photographic roll-films,申请号GB19290007486-传众专利搜索

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发明名称	An improvement in photographic roll-films
摘要
申请公布号	GB307499(A)	申请公布日期	1930.02.18
申请号	GB19290007486	申请日期	1929.03.07
申请人	I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT	发明人
分类号	G03C3/02	主分类号	G03C3/02
代理机构		代理人
主权项
地址

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