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经营范围
发明名称
TEACHING MACHINE
摘要
申请公布号
GB8426292(D0)
申请公布日期
1984.11.21
申请号
GB19840026292
申请日期
1984.10.17
申请人
SONY CORPORATION
发明人
分类号
G11B5/80;G06K7/01;G06K19/00;G09B5/06;G11B23/36
主分类号
G11B5/80
代理机构
代理人
主权项
地址
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