Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105716 | Venturi muffler having plural nozzles | John W. Henry, V | 2000-08-22 |
| 5821475 | Venturi muffler with variable throat area | John W. Henry, V | 1998-10-13 |
| 5530214 | Venturi muffler | John W. Henry, V | 1996-06-25 |