Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9649225 | Electronic hearing protector with quadrant sound localization | James M. Kirsch, Jeffrey L. Hutchings, Russell H. Lambert | 2017-05-16 |
| 9180055 | Electronic hearing protector with quadrant sound localization | James M. Kirsch, Jeffrey L. Hutchings, Russell H. Lambert | 2015-11-10 |