Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6273213 | Noise suppression louver having horizontal and vertical slats | James J. Callas, David C. Copley, Kristian M. Stoeckel | 2001-08-14 |
| 6053275 | Acoustical absorber array | John T. Leonetti, Mark Sutherland | 2000-04-25 |