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经营范围
发明名称
Motion picture projecting machine
摘要
申请公布号
US2190198(A)
申请公布日期
1940.02.13
申请号
US19360098367
申请日期
1936.08.28
申请人
THE BELL & HOWELL COMPANY
发明人
STECHBART BRUNO
分类号
G03B21/43
主分类号
G03B21/43
代理机构
代理人
主权项
地址
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