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经营范围
发明名称
Improvements in or relating to method of and apparatus for producing photographic images
摘要
申请公布号
GB335696(A)
申请公布日期
1930.10.02
申请号
GB19290026094
申请日期
1929.08.27
申请人
HOWARD DWIGHT BEACH
发明人
分类号
G02B3/08
主分类号
G02B3/08
代理机构
代理人
主权项
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