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发明名称
Interchangeable character or symbol and holder therefor
摘要
申请公布号
US1869314(A)
申请公布日期
1932.07.26
申请号
US19310532005
申请日期
1931.04.22
申请人
DISPLAY PRICE CORPORATION
发明人
PATINOT PHILIPPE
分类号
G09F7/08
主分类号
G09F7/08
代理机构
代理人
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