Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7915509 | Movable pivot bearing for changing key leverage in string keyboard instruments | — | 2011-03-29 |
| 5796024 | Method for inertial balancing of musical instrument keyboards | — | 1998-08-18 |
| 5585582 | Methods for inertial balancing of piano key mechanisms | — | 1996-12-17 |
| 5125309 | Adjustable friction grand piano action | — | 1992-06-30 |