发明名称 |
Learning system with interlocking hexagonal control structures |
摘要 |
A learning system is disclosed that comprises ordered pairs of interlocking cooperatively aligned hexagonal bosses and recesses having one or more peripherally disposed lobes as control structures to influence a user to connect or assemble articles or objects in a predetermined sequence or positional relationship.
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申请公布号 |
US5447433(A) |
申请公布日期 |
1995.09.05 |
申请号 |
US19930111593 |
申请日期 |
1993.08.17 |
申请人 |
PERRY, JR., CECIL M. |
发明人 |
PERRY, JR., CECIL M. |
分类号 |
G09B1/06;G09B1/36;G09B17/00;(IPC1-7):G09B1/36 |
主分类号 |
G09B1/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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