Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5141343 | Compressible/expandable keyboard with adjustable key spacing | William H. Roylance | 1992-08-25 |
| 5044798 | Compressible/expandable keyboard with adjustable key spacing | William H. Roylance | 1991-09-03 |
| 4482845 | Process for preventing inadvertent actuation of controls | William H. Roylance | 1984-11-13 |