Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D778349 | Electric guitar | William Eric Kirkland, Robert Douglas McDonald | 2017-02-07 |
| 7705223 | Ergonomic guitar | William Eric Kirkland, Robert Douglas McDonald | 2010-04-27 |
| D594053 | Contoured guitar | William Eric Kirkland, Robert Douglas McDonald | 2009-06-09 |
| D593147 | Contoured guitar | William Eric Kirkland, Robert Douglas McDonald | 2009-05-26 |
| 6111175 | Neck for stringed musical instruments | — | 2000-08-29 |
| 5990396 | Neck for stringed musical instruments | — | 1999-11-23 |
| 5305675 | Hand actuated tremolo assembly | — | 1994-04-26 |