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发明名称
Machine for displaying advertising
摘要
申请公布号
US1747746(A)
申请公布日期
1930.02.18
申请号
US19290337830
申请日期
1929.02.06
申请人
FRED WIRTZ;JOHANNES I. JOHANSEN
发明人
WAGNER THOMAS S. S.
分类号
G09F11/02
主分类号
G09F11/02
代理机构
代理人
主权项
地址
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