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发明名称
多功用益智绘图板
摘要
因本绘图板为平板结构,故省略其它视图。
申请公布号
CN3020151D
申请公布日期
1993.08.04
申请号
CN92303938.4
申请日期
1992.10.08
申请人
周振; 周璟全
发明人
周振; 周璟全; 赤林; 钟钰
分类号
19-06
主分类号
19-06
代理机构
湖南省专利服务中心
代理人
魏国先
主权项
地址
410006湖南省师范大学英语教学部
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