Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012180 | Apparatus and method for adjusting stringed musical instruments for fretted and unfretted play | Douglas F. Koeppe, Sr. | 2006-03-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7012180 | Apparatus and method for adjusting stringed musical instruments for fretted and unfretted play | Douglas F. Koeppe, Sr. | 2006-03-14 |