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发明名称
Display poster
摘要
申请公布号
US2278076(A)
申请公布日期
1942.03.31
申请号
US19400353619
申请日期
1940.08.22
申请人
EINSON-FREEMAN CO., INC.
发明人
HORR JOHN V.
分类号
G09F1/14
主分类号
G09F1/14
代理机构
代理人
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地址
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