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经营范围
发明名称
Multiple revolving sign
摘要
申请公布号
US1746581(A)
申请公布日期
1930.02.11
申请号
US19290354189
申请日期
1929.04.11
申请人
EDWARD DOLAR
发明人
DOLAR EDWARD
分类号
G09F11/06
主分类号
G09F11/06
代理机构
代理人
主权项
地址
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