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发明名称
Improvements in and relating to view finders
摘要
申请公布号
GB921134(A)
申请公布日期
1963.03.13
申请号
GB19590010022
申请日期
1959.03.23
申请人
VOIGTLANDER A.G.
发明人
分类号
G02B23/14;G03B13/02
主分类号
G02B23/14
代理机构
代理人
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