Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5420860 | Volume control for digital communication system | Christopher John Stevens | 1995-05-30 |
| 5276678 | Distributed switching and telephone conferencing system | Christopher John Stevens, Verne E. Munson, Peter M. Onaka | 1994-01-04 |