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发明名称
Electrical advertising device for displaying articles
摘要
申请公布号
US2507641(A)
申请公布日期
1950.05.16
申请号
US19460718554
申请日期
1946.12.26
申请人
ISAAC BLOOM
发明人
MATTER ERNST
分类号
A47F3/08;G09F11/23
主分类号
A47F3/08
代理机构
代理人
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