Modification of photographic negatives,申请号US19380197091-传众专利搜索

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发明名称	Modification of photographic negatives
摘要
申请公布号	US2174812(A)	申请公布日期	1939.10.03
申请号	US19380197091	申请日期	1938.03.21
申请人	MIEHLE PRINTING PRESS AND MANUFACTURING COMPANY	发明人	WILKINSON WILLIAM J.
分类号	G03F3/06	主分类号	G03F3/06
代理机构		代理人
主权项
地址

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