Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8273973 | Bow hold training device | Martha Brons | 2012-09-25 |
| D650828 | Bow hold training device for violin and viola | — | 2011-12-20 |
| D650829 | Bow hold training device for pinky finger for violin and viola | — | 2011-12-20 |
| D650830 | Cello bow hold training device | Martha Brons | 2011-12-20 |