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发明名称
Advertising display mechanism
摘要
申请公布号
US1773707(A)
申请公布日期
1930.08.19
申请号
US19270238825
申请日期
1927.12.09
申请人
C. A. SWANAGAN;DON L. BEEZLEY
发明人
SHEARER FREDERICK C.
分类号
G09F21/06
主分类号
G09F21/06
代理机构
代理人
主权项
地址
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