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发明名称
Animated sign
摘要
申请公布号
US2137289(A)
申请公布日期
1938.11.22
申请号
US19370155730
申请日期
1937.07.26
申请人
FRED HOTCHNER
发明人
HOTCHNER FRED
分类号
G09F13/00
主分类号
G09F13/00
代理机构
代理人
主权项
地址
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