Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6053878 | Auditory and tactile feedback system for promoting development of individuals | Harriet J. Fell | 2000-04-25 |
| 5393236 | Interactive speech pronunciation apparatus and method | Elizabeth R. Blackmer | 1995-02-28 |
| 5260869 | Communication and feedback system for promoting development of physically disadvantaged persons | Harriet J. Fell | 1993-11-09 |