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发明名称
Twin-lens mirror-reflex camera
摘要
申请公布号
US2949833(A)
申请公布日期
1960.08.23
申请号
US19540472411
申请日期
1954.12.01
申请人
RUDOLF STEINECK
发明人
STEINECK RUDOLF
分类号
G03B13/20
主分类号
G03B13/20
代理机构
代理人
主权项
地址
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