Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12223929 | Foldable acoustic stringed instrument | Jonathan Spangler, G. Bryan Cornwall, Brion Daffinson | 2025-02-11 |
| 12211468 | Foldable stringed instrument and related methods | Jonathan Spangler, Joseph Glaser, II | 2025-01-28 |