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发明名称
Action display device
摘要
申请公布号
US2623312(A)
申请公布日期
1952.12.30
申请号
US19490083834
申请日期
1949.03.28
申请人
WILLIAM J. O'HEAR
发明人
KEE CHARLES L.
分类号
G09F13/24
主分类号
G09F13/24
代理机构
代理人
主权项
地址
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