Process for color developing, including treatment with a quaternary ammonium salt,申请号US19490115769-传众专利搜索

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发明名称	Process for color developing, including treatment with a quaternary ammonium salt
摘要
申请公布号	US2551091(A)	申请公布日期	1951.05.01
申请号	US19490115769	申请日期	1949.09.14
申请人	E. I. DU PONT DE NEMOURS & COMPANY	发明人	BLANCHARD VERNON WILLIAM
分类号	G03C7/30	主分类号	G03C7/30
代理机构		代理人
主权项
地址

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