Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6314615 | Closure hinge | — | 2001-11-13 |
| 5988724 | Tailgate hinge mechanism | — | 1999-11-23 |
| 5758389 | Torsion rod assisted hinges | — | 1998-06-02 |
| 5664289 | Hinge strap assembly with convoluted torque rod | Randolph Dale Lewkoski | 1997-09-09 |
| 4196914 | Chuck for an earth boring machine | Arkady Kutman | 1980-04-08 |