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经营范围
发明名称
Improvements in or relating to silver halide photographic film elements
摘要
申请公布号
GB725336(A)
申请公布日期
1955.03.02
申请号
GB19530006073
申请日期
1953.03.04
申请人
E. I. PONT DE NEMOURS AND COMPANY
发明人
分类号
G03C1/85
主分类号
G03C1/85
代理机构
代理人
主权项
地址
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