发明名称 Apparatus, particularly learning aid for self-regulation of learning content, comprises information carrier designed as book, magazine, block or card stack with multiple interconnected sheets
摘要 <p>The apparatus comprises an information carrier (1) designed as a book, magazine, block or cards stack with multiple interconnected sheets. The non-transparent apparatus is formed as a sliding sleeve to cover a task or solution field (4,5), and has a displacement braking unit. The displacement braking unit is made of an elastic material.</p>
申请公布号 DE102010006253(A1) 申请公布日期 2011.08.18
申请号 DE20101006253 申请日期 2010.01.28
申请人 LIVCHITS, ARKADI 发明人 LIVCHITS, ARKADI
分类号 G09B3/02;G09B17/02 主分类号 G09B3/02
代理机构 代理人
主权项
地址