Photographic composition and process,申请号US19410389073-传众专利搜索

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发明名称	Photographic composition and process
摘要
申请公布号	US2340763(A)	申请公布日期	1944.02.01
申请号	US19410389073	申请日期	1941.04.17
申请人	E. I. DU PONT DE NEMOURS & COMPANY	发明人	MCQUEEN DAVID M.
分类号	G03C7/32	主分类号	G03C7/32
代理机构		代理人
主权项
地址

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