发明名称 LEARNING DEVICE FOR COLORS
摘要 The present invention relates to a learning device for colors and, more specifically, to a learning device for colors which allows a user to easily recognize the mixture state of three primary colors using one or more magenta balls, yellow balls, and cyan balls; and allows teachers to effectively teach infants or young students the principles of various colors using the balls.
申请公布号 KR20140048542(A) 申请公布日期 2014.04.24
申请号 KR20120114622 申请日期 2012.10.16
申请人 KOO, DAE HEE 发明人 KOO, DAE HEE
分类号 G09B23/22;G09B19/00 主分类号 G09B23/22
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