Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9437176 | Top-tuning system for hand percussion instrument | Ray Enhoffer, Chatchai Chandontrikit, Andrzej Krol | 2016-09-06 |
| 9343050 | Channeled shaker | Jeff Sallee, Mark A. Schnose, Andrzej Krol, Ray Enhoffer | 2016-05-17 |