Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8076561 | Methods and apparatus for vibrato effects in keyboard percussion musical instruments | Leigh Howard Stevens, Roger Clerc | 2011-12-13 |
| 7732691 | Methods and apparatus for vibrato effects in keyboard percussion musical instruments | Leigh Howard Stevens, Roger Clerc | 2010-06-08 |