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发明名称
An improvement in photographic film packs
摘要
申请公布号
GB300508(A)
申请公布日期
1930.02.12
申请号
GB19280033059
申请日期
1928.11.12
申请人
I. G. FARBENINDUSTRIE AKTIENGESELLSCHAFT
发明人
分类号
G03B17/34
主分类号
G03B17/34
代理机构
代理人
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地址
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