Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5521903 | Port system for interfacing digital PBX to digital transmission facility | Michel L. Hearn, David M. Kissel, Douglas A. Spencer, Jeffrey A. Williams, Jerome J. Zelenski | 1996-05-28 |
| 5305308 | Wireless access telephone-to-telephone network interface architecture | Charles Y. Farwell, Michael Lee Hearn, Richard M. Heidebrecht, David M. Kissel, Paul E. Miller +6 more | 1994-04-19 |
| 5195090 | Wireless access telephone-to-telephone network interface architecture | Brian D. Bolliger, Talmage P. Bursh, Jr., Marc K. Dennison, Charles Y. Farwell, Michel L. Hearn +14 more | 1993-03-16 |