Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8642868 | Beater bracket and variable drive lever system with variable pivot point spring rotor for bass drum foot pedals | Darrell Johnston | 2014-02-04 |
| 8455746 | Beater bracket and variable drive lever system with variable pivot point spring rotor for bass drum foot pedals | Darrell Johnston | 2013-06-04 |