Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D486472 | Speaker | Natarajan Thirumurugan, Stephen Mills, Leo Kiefer, Jim Petronio | 2004-02-10 |
| D486142 | Speaker | Natarajan Thirumurugan, Stephen Mills, Leo Kiefer, Jim Petronio | 2004-02-03 |
| D409619 | Audio control box | James Petronio | 1999-05-11 |
| D404036 | Audio speaker | Charles Rozier | 1999-01-12 |
| D402988 | Loudspeaker | Charles Rozier | 1998-12-22 |
| D401583 | Loudspeaker housing | Charles Rozier | 1998-11-24 |
| D358818 | Loudspeaker housing | Charles Rozier | 1995-05-30 |
| D358819 | Loudspeaker | Charles Rozier | 1995-05-30 |