PHOTOGRAPHIC CONTRAST ENHANCERS,申请号GB19800007792-传众专利搜索

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发明名称	PHOTOGRAPHIC CONTRAST ENHANCERS
摘要
申请公布号	GB2072865(A)	申请公布日期	1981.10.07
申请号	GB19800007792	申请日期	1980.03.07
申请人	MINNESOTA MINING & MFG CO	发明人
分类号	G03C7/00;G03C7/30;G03C7/392;(IPC1-7):G03C1/06;G03C7/32	主分类号	G03C7/00
代理机构		代理人
主权项
地址

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