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发明名称
CALCULADORA PARA USO INFANTIL
摘要
申请公布号
BR5501423(U)
申请公布日期
1977.07.26
申请号
BR19750001423U
申请日期
1975.12.05
申请人
DIAS S
发明人
DIAS S
分类号
G06C1/00;G09B23/02;(IPC1-7):G09B23/02
主分类号
G06C1/00
代理机构
代理人
主权项
地址
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