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发明名称
VISUAL SELECTING DEVICE FOR CHINESE TYPEWRITER, ETC.
摘要
申请公布号
CA504737(A)
申请公布日期
1954.08.03
申请号
CAD504737
申请日期
申请人
LIN YUTANG
发明人
LIN YUTANG
分类号
主分类号
代理机构
代理人
主权项
地址
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