Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294229 | Teacher and parent interactive communication system incorporating pocket sized portable audio numeric terminals | Darrell R. Tunning | 1994-03-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294229 | Teacher and parent interactive communication system incorporating pocket sized portable audio numeric terminals | Darrell R. Tunning | 1994-03-15 |