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发明名称
Combined advertising and price display board
摘要
申请公布号
US1856960(A)
申请公布日期
1932.05.03
申请号
US19300442228
申请日期
1930.04.07
申请人
LARSON LA VERNE E
发明人
LARSON LA VERNE E.
分类号
G09F23/00
主分类号
G09F23/00
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代理人
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