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发明名称
Improvements in four-lens photo-objectives
摘要
申请公布号
GB496865(A)
申请公布日期
1938.12.07
申请号
GB19380015181
申请日期
1938.05.21
申请人
CARL ZEISS
发明人
分类号
G02B9/34;G02B13/00
主分类号
G02B9/34
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代理人
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