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发明名称
Photographic view finder
摘要
申请公布号
US2206382(A)
申请公布日期
1940.07.02
申请号
US19380245353
申请日期
1938.12.13
申请人
ERNST LEITZ, G. M. B. H.
发明人
ZIMMERMANN OTTO
分类号
G02B23/14
主分类号
G02B23/14
代理机构
代理人
主权项
地址
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