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发明名称
SUBSTRATO APLICABLE PARA FINES DE ENSENANZA O RECREATIVO
摘要
申请公布号
AR240370(Q)
申请公布日期
1990.03.30
申请号
AR19850299381
申请日期
1985.01.31
申请人
PRICE/STER/SLOAN PUBLISHERS, INC.
发明人
分类号
G09B7/00;(IPC1-7):G09B7/00
主分类号
G09B7/00
代理机构
代理人
主权项
地址
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