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发明名称
Display card and support
摘要
申请公布号
US1947521(A)
申请公布日期
1934.02.20
申请号
US19320615350
申请日期
1932.06.04
申请人
EINSON-FREEMAN CO., INC.
发明人
EINSON BERNARD A.
分类号
G09F1/06
主分类号
G09F1/06
代理机构
代理人
主权项
地址
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