Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4899949 | Automatic safety-belt reeling device | Martin Specht | 1990-02-13 |
| 4796918 | Automatic rewinding type safety belt retractors | Martin Specht | 1989-01-10 |
| 4735085 | Flow measurement device utilizing force transducers | — | 1988-04-05 |