Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105716 | Venturi muffler having plural nozzles | Clyde A. Morehead | 2000-08-22 |
| 5821475 | Venturi muffler with variable throat area | Clyde A. Morehead | 1998-10-13 |
| 5530214 | Venturi muffler | Clyde A. Morehead | 1996-06-25 |
| 4956786 | Marking or engraving machine | Stephen J. Drummond | 1990-09-11 |