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发明名称
Dispositif indicateur de profondeur de champ pour appareils photographiques
摘要
申请公布号
FR1148784(A)
申请公布日期
1957.12.13
申请号
FRD1148784
申请日期
1956.02.06
申请人
发明人
DECKEL HANS;DECKEL FRIEDRICH WILHELM
分类号
G03B17/02
主分类号
G03B17/02
代理机构
代理人
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