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发明名称
Advertising or display apparatus
摘要
申请公布号
US1829459(A)
申请公布日期
1931.10.27
申请号
US19300445118
申请日期
1930.04.17
申请人
POSTERMATIC LIMITED
发明人
SHANNON JOHN
分类号
G09F11/29
主分类号
G09F11/29
代理机构
代理人
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