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发明名称
Illuminated changeable display device and method of producing the same
摘要
申请公布号
US1899962(A)
申请公布日期
1933.03.07
申请号
US19310519671
申请日期
1931.03.02
申请人
HIGGINBOTHAM LUTHER J
发明人
HIGGINBOTHAM LUTHER J.
分类号
G03C5/04;G03C11/00;G03C11/14;G09F13/10
主分类号
G03C5/04
代理机构
代理人
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