Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9754500 | Curriculum assessment | Elijah Stambaugh, Steven C. Mitchell, Patrick Michael Kellen | 2017-09-05 |
| 6547586 | Sealed electrical distribution center | — | 2003-04-15 |
| 5716044 | Vehicle door and wire harness arrangement | David R. Peterson, Richard A. White, Timothy James Kline, Michael Allen Peters | 1998-02-10 |
| 4660688 | Adaptive ride hydraulic damper with piston rod dress cap | Andrew M. Spisak | 1987-04-28 |
| 4576258 | Adaptive ride hydraulic damper | Andrew M. Spisak | 1986-03-18 |
| 4410226 | Junction box and connector arrangement | Duane L. Abbuhl | 1983-10-18 |