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发明名称
Advertising device
摘要
申请公布号
US2025361(A)
申请公布日期
1935.12.24
申请号
US19320623714
申请日期
1932.07.21
申请人
WILLIAM SKILLING
发明人
SKILLING WILLIAM
分类号
G09F19/18
主分类号
G09F19/18
代理机构
代理人
主权项
地址
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