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发明名称
Film reel
摘要
申请公布号
US1888725(A)
申请公布日期
1932.11.22
申请号
US19280297296
申请日期
1928.08.03
申请人
THE BELL & HOWELL COMPANY
发明人
HOWELL ALBERT S.
分类号
G03B21/32
主分类号
G03B21/32
代理机构
代理人
主权项
地址
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