Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9238993 | Exhaust manifold with hybrid construction and method | Frederick B. Hill, Jr. | 2016-01-19 |
| 8356411 | Exhaust manifold with hybrid construction and method | Frederick B. Hill, Jr. | 2013-01-22 |