Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4665788 | Keyboard apparatus | Jeff Tripp, John S. Allan | 1987-05-19 |
| 4498365 | Apparatus for providing extended versatility in a keyboard-controlled musical instrument in pitch variation, tone alteration characteristics and the like | Jeff Tripp, John S. Allen | 1985-02-12 |