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经营范围
发明名称
Motion-picture machine
摘要
申请公布号
US2418361(A)
申请公布日期
1947.04.01
申请号
US19450580105
申请日期
1945.02.28
申请人
THE BELL & HOWELL COMPANY
发明人
MCNABB LOUIS A.
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
主权项
地址
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