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发明名称
Perfectionnements aux appareils photographiques
摘要
申请公布号
FR48480(E)
申请公布日期
1938.03.08
申请号
FRD48480
申请日期
1937.05.13
申请人
发明人
RAYMOND HUYBRECHTS MAURICE
分类号
G03B37/02
主分类号
G03B37/02
代理机构
代理人
主权项
地址
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