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发明名称
Perfectionnements à la fabrication des trames dégradées pour la reproduction photomécanique
摘要
申请公布号
FR950887(A)
申请公布日期
1949.10.10
申请号
FRD950887
申请日期
1947.05.16
申请人
KODAK-PATHE
发明人
分类号
G03F5/16
主分类号
G03F5/16
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代理人
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