Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885763 | Voice mail system with improved detection and cancellation | Dennis O'Brien, Paul G. Hanson, Bruce C. Nepple, Michael C. Park, Robin R. Rosas | 1989-12-05 |
| 4747126 | Voice mail system on magnetic tape | William Gregory Hood, Kai-Dick Lee, Bruce C. Nepple, Daniel C. Olin, Lawrence B. Park +1 more | 1988-05-24 |