Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11756513 | Elliptical silicone roller for grand piano action with customized durometer reading | — | 2023-09-12 |
| 8735699 | Main action rail for upright piano with front-accessible whippen flange screw | Jamie Marks, Dana Mazzaglia | 2014-05-27 |
| 8614382 | Damper action for upright piano with sostenuto spring tab using tension from the damper spring | Jamie Marks, Dana Mazzaglia | 2013-12-24 |
| 8541671 | Lost motion compensation device for an upright piano action | Jamie Marks, Dana Mazzaglia | 2013-09-24 |
| 8487172 | Piano action flange with open-slotted rail attachment feature | Jamie Marks, Dana Mazzaglia | 2013-07-16 |
| 8143506 | Hammer assembly for grand piano | Bruce E. Clark, Kevin Burke | 2012-03-27 |
| D641392 | Damper lever flange for grand piano | Bruce E. Clark | 2011-07-12 |
| D636430 | Damper lever for grand piano | Bruce E. Clark | 2011-04-19 |
| 7781652 | Universal grand piano piano action with simultaneous half stroke keyboard design capability | Bruce E. Clark, Kevin Burke | 2010-08-24 |
| 7687692 | Hammer shank and shank butt for piano | Bruce E. Clark, Kevin Burke | 2010-03-30 |
| 7687694 | Low inertia grand piano piano action | Bruce E. Clark, Kevin Burke | 2010-03-30 |
| 5521795 | Solenoid mounting apparatus | Alpha Cheung | 1996-05-28 |
| 5251529 | Solenoid mounting system for a keyboard instrument | — | 1993-10-12 |