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发明名称
Improvements in or relating to half-tone screens for í¡í¡ting processes
摘要
申请公布号
GB925752(A)
申请公布日期
1963.05.08
申请号
GB19610000833
申请日期
1961.01.09
申请人
KODAK LIMITED
发明人
分类号
G03F5/18;G03F5/20
主分类号
G03F5/18
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代理人
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