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发明名称
Perfectionnements aux appareils photographiques
摘要
申请公布号
FR755448(A)
申请公布日期
1933.11.24
申请号
FRD755448
申请日期
1932.08.25
申请人
发明人
GUINTRAND LEON
分类号
G03B35/10
主分类号
G03B35/10
代理机构
代理人
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