Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5548802 | Method and apparatus for a remote network switch for a land mobile transmission trunked communication system | Keith Barnes, Howard Neal Brace, Philip A. Keefer, Michael E. Mihelich | 1996-08-20 |
| 5465386 | Signaling protocol for a distributive wide area transmission trunked communication system | Keith Barnes, Howard Neal Brace, Philip A. Keefer, Michael E. Mihelich | 1995-11-07 |
| 5440759 | Modular networking switch system for a distributive wide area transmission trunked communication system | Keith Barnes, Howard Neal Brace, Philip A. Keefer, Michael E. Mihelich | 1995-08-08 |
| 5159701 | Method and apparatus for a distributive wide area network for a land mobile transmission trunked communication system | Keith Barnes, Howard Neal Brace, Philip A. Keefer, Michael E. Mihelich | 1992-10-27 |
| 5040237 | Method and apparatus for an alternate home channel for a land mobile transmission trunked communication system | Keith Barnes, Philip A. Keefer | 1991-08-13 |