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经营范围
发明名称
Improvements in or relating to apparatus for teaching typing, teleprinting or the like
摘要
申请公布号
GB896806(A)
申请公布日期
1962.05.16
申请号
GB19590030477
申请日期
1959.09.07
申请人
IRENE DOROTHY KERRIDGE
发明人
分类号
G09B13/00
主分类号
G09B13/00
代理机构
代理人
主权项
地址
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