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发明名称
Perfectionnements aux blocs de pellicules photographiques
摘要
申请公布号
FR687929(A)
申请公布日期
1930.08.14
申请号
FRD687929
申请日期
1929.03.28
申请人
SOCIETE LUMIERE
发明人
分类号
G03B17/34
主分类号
G03B17/34
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代理人
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