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发明名称
TYPEWRITER TRAINER
摘要
申请公布号
US3423845(A)
申请公布日期
1969.01.28
申请号
US19650509108
申请日期
1965.11.22
申请人
KEE INC.
发明人
GORDON MALCOLM EDGE;TIMOTHY MARCH BEAUPRE EILOART;IVAN S. HORABIN;PETER JOHN WYNN RAYNER
分类号
G09B13/00;G09B13/02;(IPC1-7):G09B13/02
主分类号
G09B13/00
代理机构
代理人
主权项
地址
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