发明公开
- 专利标题： TEACHING AID
- 专利标题（中）： 教具
-
申请号： EP01909993.6申请日： 2001-03-07
-
公开(公告)号： EP1261960A1公开(公告)日： 2002-12-04
- 发明人: WALKER, Roger , HISKETT, Graham
- 申请人： Direct Educational Services Limited
- 申请人地址： Heath House,156A Sandridge Road St. Albans,Hertfordshire AL1 4AF GB
- 专利权人： Direct Educational Services Limited
- 当前专利权人： Direct Educational Services Limited
- 当前专利权人地址： Heath House,156A Sandridge Road St. Albans,Hertfordshire AL1 4AF GB
- 代理机构： Parry, Christopher Stephen
- 优先权： GB0005464 20000308
- 国际公布： WO01067424 20010913
- 主分类号： G09B19/02
- IPC分类号： G09B19/02
摘要：
A teaching aid comprises a frame (1), a plurality of elongate rods (2) mounted horizontally in the frame and spaced vertically from each other and a plurality of polyhedral blocks (3) rotatably mounted on each rod. Means are provided to releasably hold each block (3) in at least three discrete rotary positions on its respective rod (2).
公开/授权文献
- EP1261960B1 TEACHING AID 公开/授权日：2006-01-04
信息查询
