Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5083924 | Tactile enhancement method for progressively optimized reading | Harper Nelson | 1992-01-28 |
| 5061185 | Tactile enhancement method for progressively optimized reading | Harper Nelson | 1991-10-29 |
| 5007838 | Tactile enhancement method for progressively optimized reading | — | 1991-04-16 |