Issued Patents 2017
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9818384 | Outdoor musical drum structures | Thomas L. Keller | 2017-11-14 |
| 9734808 | Outdoor musical drum structures | Thomas L. Keller | 2017-08-15 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9818384 | Outdoor musical drum structures | Thomas L. Keller | 2017-11-14 |
| 9734808 | Outdoor musical drum structures | Thomas L. Keller | 2017-08-15 |