Photographic elements having a light-sensitive silver halide layer and a stripping layer composed of a polyvinyl pyridine quaternary salt and process of using such elements,申请号US19490115943-传众专利搜索

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发明名称	Photographic elements having a light-sensitive silver halide layer and a stripping layer composed of a polyvinyl pyridine quaternary salt and process of using such elements
摘要
申请公布号	US2612446(A)	申请公布日期	1952.09.30
申请号	US19490115943	申请日期	1949.09.15
申请人	E. I. DU PONT DE NEMOURS AND COMPANY	发明人	UMBERGER JACOB QUENTIN
分类号	G03C1/805	主分类号	G03C1/805
代理机构		代理人
主权项
地址

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