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发明名称
Photographic elements with lightfiltering layers
摘要
申请公布号
US2606834(A)
申请公布日期
1952.08.12
申请号
US19490105665
申请日期
1949.07.19
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
SANER WILLIAM RUSSELL
分类号
G03C1/835
主分类号
G03C1/835
代理机构
代理人
主权项
地址
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