Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9437176 | Top-tuning system for hand percussion instrument | Richard Simons, Chatchai Chandontrikit, Andrzej Krol | 2016-09-06 |
| 9343050 | Channeled shaker | Jeff Sallee, Mark A. Schnose, Andrzej Krol, Richard Simons | 2016-05-17 |
| 8609967 | Top-tuning system for hand percussion instrument | Richard Simons, Chatchai Chandontrikit, Andrzej Krol | 2013-12-17 |
| 8101841 | One-handed musical triangle | Douglas Hinrichs, Andrzej Krol, Richard Simons | 2012-01-24 |
| 7964781 | Rotating multi-stem instrument bracket | Randy Lovvorn, Andrzej Krol, Richard Simons | 2011-06-21 |