Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139423 | Electronic teaching device | Brian C. McCormack, Robert Greenberg, Glen A. Thornton, Veronica B. Howard | 1992-08-18 |
| 5137457 | Electronic teaching device | Veronica B. Howard, Robert Greenberg, Brian C. McCormack, Glen A. Thornton | 1992-08-11 |
| 5135398 | Electronic teaching device | Glen A. Thornton, Robert Greenberg, Brian C. McCormack, Veronica B. Howard | 1992-08-04 |