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发明名称
Advertising device
摘要
申请公布号
US1957665(A)
申请公布日期
1934.05.08
申请号
US19330651944
申请日期
1933.01.16
申请人
PATTERSON WARD W
发明人
PATTERSON WARD W.
分类号
G09F19/10
主分类号
G09F19/10
代理机构
代理人
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