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经营范围
发明名称
Improvements in or relating to photographic materials
摘要
申请公布号
GB566832(A)
申请公布日期
1945.01.16
申请号
GB19430009825
申请日期
1943.06.18
申请人
JOHN ALFRED HENRY HART;EDWARD WILLIAM LEE
发明人
分类号
G03C1/74
主分类号
G03C1/74
代理机构
代理人
主权项
地址
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