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发明名称
SPEECH AID
摘要
申请公布号
GB2121587(B)
申请公布日期
1986.05.14
申请号
GB19830014031
申请日期
1983.05.20
申请人
HERBERT * ROWBOTHAM
发明人
HERBERT * ROWBOTHAM
分类号
G09B5/06;G09B19/04;(IPC1-7):G09B19/04;G09B5/04
主分类号
G09B5/06
代理机构
代理人
主权项
地址
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