Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5790527 | Trunked radio frequency communication system for accommodating both frequency and time division based RF communications | William Oscar Janky, Philip C. Gulliford, Clayton F. Helvey, Ross W. Lampe, Anthony B. Waldroup | 1998-08-04 |
| 5754960 | Display console and user interface for multisite RF trunked system | Stephen R. Downs, Charles P. Brame | 1998-05-19 |
| 5253253 | Message bus slot update/idle control in RF trunking multisite switch | Charles P. Brame, Timothy F. Cree, Philip C. Gulliford, Wim A. Imron, James L. Teel | 1993-10-12 |
| 5200954 | Communication link between multisite RF trunked network and an intelligent dispatcher console | James L. Teel, Charles P. Brame, Timothy F. Cree, Stephen R. Downs | 1993-04-06 |
| 4817146 | Cryptographic digital signal transceiver method and apparatus | Craig F. Szczutkowski, Richard Louis Zinser, Eugene H. Peterson, III | 1989-03-28 |
| 4757536 | Method and apparatus for transceiving cryptographically encoded digital data | Craig F. Szczutkowski, Eugene H. Peterson, III | 1988-07-12 |