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发明名称
Advertising sign
摘要
申请公布号
US2181409(A)
申请公布日期
1939.11.28
申请号
US19380237165
申请日期
1938.10.27
申请人
PATTERSON WARD W
发明人
PATTERSON WARD W.
分类号
G09F7/00
主分类号
G09F7/00
代理机构
代理人
主权项
地址
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