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发明名称
Help for blind people
摘要
申请公布号
GB9824473(D0)
申请公布日期
1999.01.06
申请号
GB19980024473
申请日期
1998.11.09
申请人
LYNE, WILLIAM G
发明人
分类号
主分类号
代理机构
代理人
主权项
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