Issued Patents 2018
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9982793 | Passive exhaust valve with dual torsion spring | David L. Anderson | 2018-05-29 |
| 9982794 | Passive exhaust valve with external torsion spring | — | 2018-05-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9982793 | Passive exhaust valve with dual torsion spring | David L. Anderson | 2018-05-29 |
| 9982794 | Passive exhaust valve with external torsion spring | — | 2018-05-29 |