Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12136404 | String tensioner for musical instrument | — | 2024-11-05 |
| 11335305 | String tensioner for musical instrument | — | 2022-05-17 |
| 10229659 | Low-friction bridge for stringed instrument | — | 2019-03-12 |
| 10224009 | String tensioner for stringed instrument | — | 2019-03-05 |
| 9792886 | String tensioner for stringed instrument | — | 2017-10-17 |
| 9613600 | Constant tension device | — | 2017-04-04 |
| 9318081 | Constant tension device | — | 2016-04-19 |
| 8779258 | Stringed musical instrument using spring tension | Paul Dowd | 2014-07-15 |
| 7888570 | Stringed musical instrument using spring tension | Paul Dowd | 2011-02-15 |
| 7855330 | Modular bridge for stringed musical instrument | Paul Dowd | 2010-12-21 |
| 7692079 | Stringed musical instrument | — | 2010-04-06 |
| 7592528 | Stringed musical instrument using spring tension | Paul Dowd | 2009-09-22 |
| 7541528 | Stringed musical instrument using spring tension | — | 2009-06-02 |
| 7534950 | Stringed instrument that maintains relative tune | — | 2009-05-19 |