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经营范围
发明名称
PORTABLE READING SYSTEM FOR BLIND
摘要
申请公布号
GB8628711(D0)
申请公布日期
1987.01.07
申请号
GB19860028711
申请日期
1986.12.02
申请人
BAIL, M H
发明人
分类号
G09B21/00
主分类号
G09B21/00
代理机构
代理人
主权项
地址
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