Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7534106 | Kinesthetic number line | Jennifer B. Dutcher | 2009-05-19 |
| 6041507 | Multiple line drawing aid | Jennifer B. Dutcher | 2000-03-28 |
| 6033139 | Multiple pen holder and drawing aid | — | 2000-03-07 |