Improvements in or relating to photographic materials,申请号GB19440016892-传众专利搜索

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发明名称	Improvements in or relating to photographic materials
摘要
申请公布号	GB580511(A)	申请公布日期	1946.09.10
申请号	GB19440016892	申请日期	1944.09.05
申请人	JOHN ALFRED HENRY HART;EDWARD WILLIAM LEE	发明人
分类号	G03C1/93	主分类号	G03C1/93
代理机构		代理人
主权项
地址

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