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经营范围
发明名称
Photographic element
摘要
申请公布号
US2400532(A)
申请公布日期
1946.05.21
申请号
US19440531978
申请日期
1944.04.20
申请人
E. I. DU PONT DE NEMOURS & COMPANY
发明人
BLAKE RALPH KINGSLEY;BALDSIEFEN WALTER DEWEY
分类号
G03C1/053
主分类号
G03C1/053
代理机构
代理人
主权项
地址
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