Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D566594 | Foldable gas detector | Donald B. Owen, David Kinsman | 2008-04-15 |
| 4974833 | Electronic martial arts training device | Kenneth D. Hartman | 1990-12-04 |
| 4839642 | Data transmission system with data verification | James E. Batz, Dennis Martell | 1989-06-13 |