Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6676412 | Assessment of spelling and related skills | Julie Masterson, Kenn Apel | 2004-01-13 |
| 6146147 | Interactive sound awareness skills improvement system and method | — | 2000-11-14 |