Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826515 | Headset noise exposure dosimeter | Paul A Ewer | 2004-11-30 |
| 6735453 | Automatic headset hookswitch | James F. Bobisuthi, Lawrence W. Gollbach, Steven F. Burson | 2004-05-11 |
| 6683952 | Headset adapter with detachable under-the-phone accessory deck | Gerald W. Skulley, Thomas A. Tedham, Jeffrey B. Waffensmith | 2004-01-27 |