Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4852151 | Modem with call waiting | Robert L. Richards, Raouf Halim | 1989-07-25 |
| 4799890 | Electronic learning device for teaching how to tell time | Barbara J. Thompson | 1989-01-24 |
| 4602152 | Bar code information source and method for decoding same | — | 1986-07-22 |
| 4549867 | Electronic learning aid with random number modes | — | 1985-10-29 |
| 4466801 | Electronic learning aid with means for repeating an element of nonspoken sound | Albert J. Olson | 1984-08-21 |
| 4457719 | Electronic learning aid for providing sequencing and spelling exercises | Barbara J. Thompson | 1984-07-03 |