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发明名称
Rotatable advertising display
摘要
申请公布号
US3031784(A)
申请公布日期
1962.05.01
申请号
US19580778957
申请日期
1958.12.08
申请人
STEIN WILLIAM S
发明人
STEIN WILLIAM S.
分类号
G09F7/22
主分类号
G09F7/22
代理机构
代理人
主权项
地址
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