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发明名称
Self-teaching device
摘要
申请公布号
US3151403(A)
申请公布日期
1964.10.06
申请号
US19620244047
申请日期
1962.12.12
申请人
INTERNATIONAL BUSINESS MACHINES CORPORATION
发明人
SINEX JOHN CLARKE
分类号
G09B3/08
主分类号
G09B3/08
代理机构
代理人
主权项
地址
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