Drop-out process for halftone photography,申请号US19590817755-传众专利搜索

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发明名称	Drop-out process for halftone photography
摘要
申请公布号	US3031303(A)	申请公布日期	1962.04.24
申请号	US19590817755	申请日期	1959.06.03
申请人	HUTTKAY ARTHUR L	发明人	HUTTKAY ARTHUR L.
分类号	G03F1/12	主分类号	G03F1/12
代理机构		代理人
主权项
地址

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