Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9797279 | Exhaust valve and an engine assembly including the exhaust valve having a pressure relief apparatus | Kenneth L. Briscoe, Robert S. McAlpine | 2017-10-24 |
| 8746701 | Piston assembly | — | 2014-06-10 |