Process of making a photographic mask of high isoelectric point gelatin,申请号US19480012017-传众专利搜索

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发明名称	Process of making a photographic mask of high isoelectric point gelatin
摘要
申请公布号	US2487858(A)	申请公布日期	1949.11.15
申请号	US19480012017	申请日期	1948.02.28
申请人	EASTMAN KODAK COMPANY	发明人	DEAN DAVID;HOUCK ROBERT C.
分类号	G03C7/18	主分类号	G03C7/18
代理机构		代理人
主权项
地址

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