Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9747815 | Demonstration tools for geometric properties | George Hart, Cindy Lawrence, Timothy Nissen, Chenteh Kenneth Fan | 2017-08-29 |
| 9472120 | Square wheel tricycle | George Hart, Cindy Lawrence, Timothy Nissen, Chenteh Kenneth Fan | 2016-10-18 |
| 9165479 | Demonstration tools for geometric properties | George Hart, Cindy Lawrence, Timothy Nissen, Chenteh Kenneth Fan | 2015-10-20 |
| 8602790 | Demonstration tools for geometric properties | George Hart, Cindy Lawrence, Timothy Nissen, Chenteh Kenneth Fan | 2013-12-10 |