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发明名称
Film loop control for motion picture machines
摘要
申请公布号
US2045748(A)
申请公布日期
1936.06.30
申请号
US19330669518
申请日期
1933.05.05
申请人
JOHAN BERGGREN PER
发明人
BERGGREN PER JOHAN
分类号
G03B1/56
主分类号
G03B1/56
代理机构
代理人
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