Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5539159 | Handwriting capture device | Robert L. Protheroe, David C. Wills | 1996-07-23 |
| 5380958 | Handwriting capture device | Robert L. Protheroe, David C. Wills | 1995-01-10 |
| 5322978 | Handwriting capture device with integral forms printer | Robert L. Protheroe | 1994-06-21 |
| 5227590 | Handwriting capture device | Robert L. Protheroe, David C. Wills | 1993-07-13 |
| 5120906 | Handwriting capture device | Robert L. Protheroe, David C. Wills | 1992-06-09 |