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发明名称
TYPEWRITING PRACTICE APPARATUS
摘要
申请公布号
JPS6113276(A)
申请公布日期
1986.01.21
申请号
JP19840133279
申请日期
1984.06.29
申请人
CANON KK
发明人
MATSUYAMA SHIGERU
分类号
B41J5/30;G06F3/02;G06F17/21;G09B13/00
主分类号
B41J5/30
代理机构
代理人
主权项
地址
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DISPLAY
