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发明名称
Direct-positive photographic process
摘要
申请公布号
US2607684(A)
申请公布日期
1952.08.19
申请号
US19490117614
申请日期
1949.09.24
申请人
EASTMAN KODAK COMPANY
发明人
NOWAK CHESTER J.;COLT RALPH S.
分类号
G03C5/315
主分类号
G03C5/315
代理机构
代理人
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地址
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