Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9640162 | Musical instrument switching system | Sterling Ball, Drew Thomas Montell, Robert James Wolstein, Dudley Dean Gimpel | 2017-05-02 |
| 9196235 | Musical instrument switching system | Sterling Ball, Thomas Montell, Dudley Dean Gimpel, Robert James Wolstein | 2015-11-24 |