发明授权
- 专利标题： Method and apparatus for demonstrating polynomial algebraic operations
- 专利标题（中）： 用于演示聚合代数运算的方法和装置
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申请号： US39165073申请日： 1973-08-27
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公开(公告)号： US3858332A公开(公告)日： 1975-01-07
- 发明人: RASMUSSEN PETER
- 申请人： RASMUSSEN PETER
- 专利权人： Peter Rasmussen
- 当前专利权人： Peter Rasmussen
- 优先权： US39165073 1973-08-27
- 主分类号： G09B23/02
- IPC分类号： G09B23/02
摘要：
An assembly for the demonstration of algebraic or arithmetic operations by the manipulation of a plurality of rectangular elements of different sizes and shapes and characterized by the incommensurability of selected width and length dimensions thereof, and the distinguishability of opposing faces of the elements to denote positively and negatively oriented elements.
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