Issued Patents 2004
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D498227 | Communications earpiece | James Turnbull, Thomas Henry Perszyk, Stuart Karten, Dennis Schroeder, Simon Sollberger | 2004-11-09 |
| 6741718 | Near-field speaker/microphone acoustic/seismic dampening communication device | Marcia Brumitt, Edward Springer | 2004-05-25 |
| 6688421 | Earmold for improved retention of coupled device | Daniel W. Mauney, Thomas Henry Perszyk, Edward Springer | 2004-02-10 |