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发明名称
MOTION PICTURE CAMERA
摘要
申请公布号
CA302975(A)
申请公布日期
1930.08.12
申请号
CAD302975
申请日期
申请人
THE BELL AND HOWELL COMPANY
发明人
ALBERT SUMMERS HOWELL
分类号
主分类号
代理机构
代理人
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