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经营范围
发明名称
Improvements in or relating to photographic tone correcting masks
摘要
申请公布号
GB595149(A)
申请公布日期
1947.11.27
申请号
GB19450003655
申请日期
1945.02.14
申请人
KODAK LIMITED
发明人
分类号
G03C7/18
主分类号
G03C7/18
代理机构
代理人
主权项
地址
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