Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10127941 | Optical disk drive guide | John S. Best, William M. Dyer, A. David Erpelding, Steven R. Hetzler | 2018-11-13 |
| 9984722 | Disc storage cassettes | Donald S. Bethune, William M. Dyer, A. David Erpelding, Steven R. Hetzler, Drew B. Lawson +1 more | 2018-05-29 |