Issued Patents 2016
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9359817 | Dual-use modular carbon-fiber ladder and bridge | Joseph Kummer, Michael D. Griswold, Michael J. Hall | 2016-06-07 |
| 9355619 | Adjustable neck stiffener for stringed musical instruments | Michael D. Griswold | 2016-05-31 |