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Inventor: Frieman; Shlomo Ruvane
Address: Los Angeles, CA
No. of patents: 3
Patents:
| Patent Number |
Title Of Patent |
Date Issued |
| 6926530 |
Game apparatuses and methods for use in teaching the addition and subtraction of positive and ne |
August 9, 2005 |
| A game apparatus and a method for assisting in teaching the addition and subtraction of positive and, especially, negative numbers, are based on the Null Theory of Adding and Subtracting Positive and Negative Numbers. The apparatus comprises (a) a plurality of positive units, (b) a plura |
| 6786485 |
Dice game apparatus and methods for using same |
September 7, 2004 |
| A dice game apparatus comprises a first numerical die, a second numerical die, and at least one operator die selected from the group consisting of a first operator die and a second operator die. While the dice game apparatus comprises the first operator die and/or the second operator die |
| 6755658 |
Game apparatuses and methods for use in teaching the addition, subtraction, multiplication, and |
June 29, 2004 |
| Game apparatuses and methods for assisting in teaching the addition, subtraction, multiplication, and division of positive and, especially, negative numbers, are based on the Null Theory of Adding, Subtracting, Multiplying, and Dividing Positive and Negative Numbers. An exemplary game |
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