Issued Patents 2018
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D830642 | Hearing protector headband | Douglas D. Fletcher, Oscar Hemberg, Edvard B. E. Mänsson, Angela L. Pan, Gregory G. Jager | 2018-10-09 |
| D807584 | Hearing protector | Douglas D. Fletcher, Nicolas A. Echeverri, Oscar Hemberg | 2018-01-09 |
| D807585 | Hearing protector headband | Douglas D. Fletcher, Nicolas A. Echeverri, Oscar Hemberg | 2018-01-09 |