Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5426719 | Ear based hearing protector/communication system | John Franks, Derek E. Dunn | 1995-06-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5426719 | Ear based hearing protector/communication system | John Franks, Derek E. Dunn | 1995-06-20 |