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发明名称
Improvements relating to roll-film cameras
摘要
申请公布号
GB335100(A)
申请公布日期
1930.09.18
申请号
GB19290032980
申请日期
1929.10.30
申请人
OSKAR MESSTER
发明人
分类号
G03B1/48
主分类号
G03B1/48
代理机构
代理人
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