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发明名称
Advertising device
摘要
申请公布号
US2378051(A)
申请公布日期
1945.06.12
申请号
US19420447044
申请日期
1942.06.15
申请人
VERNON WILLIAM F
发明人
VERNON WILLIAM F.
分类号
G09F19/00
主分类号
G09F19/00
代理机构
代理人
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