Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6496586 | Thin Loudspeaker | Michael A. Hayes, Sean P. O'Brien, Michael J. Parrella, David Claybaugh, Thomas Lundie +1 more | 2002-12-17 |
| 5638456 | Piezo speaker and installation method for laptop personal computer and other multimedia applications | William Kokonaski, Michael J. Parrella, Steven L. Machacek | 1997-06-10 |