Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11525502 | Circular wave drive | Shan Guan, Scott Zerkle Barnes | 2022-12-13 |
| 5782141 | Engine having a non-intrusive self closing valve for magnetic chip detectors | — | 1998-07-21 |