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发明名称
Display and advertising sign
摘要
申请公布号
US2292311(A)
申请公布日期
1942.08.04
申请号
US19410375189
申请日期
1941.01.21
申请人
BURDICK-BARON COMPANY
发明人
WIRTZ FRED
分类号
G09F7/00
主分类号
G09F7/00
代理机构
代理人
主权项
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