Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10690016 | Engine valve lifter having anti-rotation plug | Leighton Roberts, Douglas E. Wright, James E. McCarthy, Jr., Matthew A. Vance, Otto Schultheis | 2020-06-23 |
| D885439 | Engine valve lifter having anti-rotation plug | Leighton Roberts, Douglas E. Wright, James E. McCarthy, Jr., Matthew A. Vance, Otto Schultheis | 2020-05-26 |