Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D482019 | Headset assembly | Robert M. Petersen, Glen V. Walter | 2003-11-11 |
| D478561 | Telephone base unit | Robert M. Petersen, Glen V. Walter | 2003-08-19 |
| D478326 | Amplifier | Robert M. Petersen, Glen V. Walter | 2003-08-12 |