Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870408 | Method for dynamically allocating data channels on a trunked communication system | Kenneth J. Zdunek, Garry C. Hess | 1989-09-26 |
| 4833701 | Trunked communication system with nationwide roaming capability | Kenneth J. Zdunek | 1989-05-23 |
| 4817190 | Method for dynamically regrouping subscribers on a communications system | John E. Major, Daniel J. Coombes, Susan M. Whitney, Michael D. Sasuta, Kenneth J. Zdunek +4 more | 1989-03-28 |