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发明名称
Improvements in or relating to photographic contact-printing apparatus
摘要
申请公布号
GB646942(A)
申请公布日期
1950.11.29
申请号
GB19470027128
申请日期
1947.10.09
申请人
GEBRUEDER KOHLER G.M.B.H.
发明人
分类号
G03B27/26
主分类号
G03B27/26
代理机构
代理人
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