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发明名称
Focusing plate for a photographic camera viewfinder
摘要
申请公布号
US3149547(A)
申请公布日期
1964.09.22
申请号
US19610080846
申请日期
1961.01.05
申请人
VEB KAMERA- UND KINOWERKE DRESDEN
发明人
JURENZ ROLF
分类号
G03B13/26
主分类号
G03B13/26
代理机构
代理人
主权项
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