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发明名称
Advertising device
摘要
申请公布号
US2112314(A)
申请公布日期
1938.03.29
申请号
US19360115453
申请日期
1936.12.12
申请人
SPANDAU CARL G
发明人
SPANDAU CARL G.
分类号
G09F13/12
主分类号
G09F13/12
代理机构
代理人
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