Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8107634 | High intensity calibration device | Richard M. Gratzer, Robert D. Lee, James Robert Underbrink, Wayne F. Wenneman | 2012-01-31 |
| 7365476 | Methods and systems for supporting acoustical transducers | — | 2008-04-29 |