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发明名称
Photographic enlarger
摘要
申请公布号
US2317692(A)
申请公布日期
1943.04.27
申请号
US19400355638
申请日期
1940.09.06
申请人
MORIN GEORGE G
发明人
MORIN GEORGE G.
分类号
G03B27/32
主分类号
G03B27/32
代理机构
代理人
主权项
地址
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