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发明名称
Advertising apparatus
摘要
申请公布号
US2546236(A)
申请公布日期
1951.03.27
申请号
US19480050209
申请日期
1948.09.20
申请人
PFLUEGER JOHN L
发明人
PFLUEGER JOHN L.
分类号
G09F11/02
主分类号
G09F11/02
代理机构
代理人
主权项
地址
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