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发明名称
Moving display sign
摘要
申请公布号
US1756523(A)
申请公布日期
1930.04.29
申请号
US19280325289
申请日期
1928.12.11
申请人
PORTS LOUISE R
发明人
PORTS LOUISE R.
分类号
G09F11/18
主分类号
G09F11/18
代理机构
代理人
主权项
地址
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