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发明名称
Advertising display clock assembly
摘要
申请公布号
US2641856(A)
申请公布日期
1953.06.16
申请号
US19490109713
申请日期
1949.08.11
申请人
ROWE MANUFACTURING CO., INC.
发明人
GABRIELSEN CHRISTIAN
分类号
G04B45/00;G09F23/16
主分类号
G04B45/00
代理机构
代理人
主权项
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