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发明名称
Boceto de máquina de escribir de entrenamiento con sus correspondientes tableros gráficos.
摘要
申请公布号
ES5081(U)
申请公布日期
1939.08.16
申请号
ES19810000050U
申请日期
1938.08.06
申请人
VALENZUELA URZÁIZ, IGNACIO
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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