Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7856115 | Optimized moving-coil loudspeaker | Joshua M. Sadd | 2010-12-21 |
| 7787645 | Loudspeaker-transducer array | Joshua M. Sadd | 2010-08-31 |
| RE38405 | Enhanced concert audio system | Ronald D. Borthwick | 2004-01-27 |
| 5668884 | Enhanced concert audio system | Ronald D. Borthwick | 1997-09-16 |
| 5432858 | Enhanced concert audio system | Ronald D. Borthwick | 1995-07-11 |