Halftone screen,申请号US19510256173-传众专利搜索

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法人/股东/高管

发明名称	Halftone screen
摘要
申请公布号	US2719790(A)	申请公布日期	1955.10.04
申请号	US19510256173	申请日期	1951.11.14
申请人	STICHTING INSTITUUT VOOR GRAFISCHE TECHNIEK T. N. O.	发明人	MONROY JOHAN F.
分类号	G03F5/12	主分类号	G03F5/12
代理机构		代理人
主权项
地址

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