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发明名称
Perfectionnements aux appareils photographiques à deux objectifs
摘要
申请公布号
FR1052364(A)
申请公布日期
1954.01.25
申请号
FRD1052364
申请日期
1952.03.11
申请人
ETABLISSEMENTS MODERNES DE MECANIQUE
发明人
分类号
G03B13/20
主分类号
G03B13/20
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代理人
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