Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9412345 | Adjustable zero fret and method of use on a stringed instrument | Frank Johns, George Mathews | 2016-08-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9412345 | Adjustable zero fret and method of use on a stringed instrument | Frank Johns, George Mathews | 2016-08-09 |