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发明名称
UN SISTEMA DE ENSENANZA AYUDADO POR COMPUTADORA.
摘要
申请公布号
ES397506(A1)
申请公布日期
1974.05.16
申请号
ES19060003975
申请日期
1971.11.30
申请人
WESTINGHOUSE ELECTRIC CORP.
发明人
分类号
G09B;(IPC1-7):09B/
主分类号
G09B
代理机构
代理人
主权项
地址
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