Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411053 | Dual pen interactive whiteboard system | Dana Doubrava, Mark E. Plasterer, David Eric Timmons | 2013-04-02 |
| 4206314 | Graphic digitizer | Brownlow J. Fadden | 1980-06-03 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8411053 | Dual pen interactive whiteboard system | Dana Doubrava, Mark E. Plasterer, David Eric Timmons | 2013-04-02 |
| 4206314 | Graphic digitizer | Brownlow J. Fadden | 1980-06-03 |