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发明名称
Electric display system
摘要
申请公布号
US1769554(A)
申请公布日期
1930.07.01
申请号
US19240691731
申请日期
1924.02.09
申请人
TARBOX JOHN P
发明人
TARBOX JOHN P.
分类号
G09F7/00
主分类号
G09F7/00
代理机构
代理人
主权项
地址
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