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经营范围
发明名称
Improvements in or relating to photographic films
摘要
申请公布号
GB513238(A)
申请公布日期
1939.10.06
申请号
GB19380010296
申请日期
1938.04.04
申请人
DU PONT FILM MANUFACTURING CORPORATION
发明人
分类号
G03C1/76
主分类号
G03C1/76
代理机构
代理人
主权项
地址
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