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发明名称
Film holding device for cameras
摘要
申请公布号
US2872842(A)
申请公布日期
1959.02.10
申请号
US19560575496
申请日期
1956.04.02
申请人
GRASS ALBERT M
发明人
GRASS ALBERT M.
分类号
G03B17/26
主分类号
G03B17/26
代理机构
代理人
主权项
地址
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