Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7917131 | System and method for minimizing undesired audio in a communication system utilizing distributed signaling | Gregory A. Feeney, Gary P. Hunsberger, Daniel J. McDonald, Michael C. Petrie | 2011-03-29 |
| 7546085 | Method for preventing an unauthorized device from operating in a 800 MHz trunked radio communications system | Tanhoa Trandai, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald, David R. Mills | 2009-06-09 |
| 7536196 | Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 559 to 320 | Tanhoa Trandai, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald, David R. Mills | 2009-05-19 |
| 7228130 | Method for preventing an unauthorized device from operating in an 800 MHz trunked radio communications system using channels 319 to 0 | Tanhoa Trandai, John M. Gilbert, Donald R. Griffis, Daniel J. McDonald, David R. Mills | 2007-06-05 |
| 7136664 | Method for determining a control channel in a trunked radio communications system utilizing a scan list | Andor Almasi, Tanhoa Trandai | 2006-11-14 |
| 7089026 | Method for determining a control channel in a trunked radio communications system | Andor Almasi, Donald R. Griffis, Tanhoa Trandai | 2006-08-08 |
| 6411816 | Method of registration in a communication system | Daniel J. McDonald, Randy L. Ekl, John T. Mistro, Erick Loven | 2002-06-25 |
| 6119017 | Method of registration in a communication system | Daniel J. McDonald, Randy L. Ekl | 2000-09-12 |