Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5191607 | Ring tone muting with disable | Jim Tykal | 1993-03-02 |
| 4987599 | Communication control console center with improved volume control | Steven B. Most, Susanne L. Dunsmore, Jeffrey J. Blanchette | 1991-01-22 |