Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6867708 | Communications system and method for interconnected networks having a linear topology, especially railways | David Poltz, Mark Hefner, Irfan Ali, William Cherrick Schoonmaker, George Jarman | 2005-03-15 |
| 6400281 | Communications system and method for interconnected networks having a linear topology, especially railways | David Michael Peltz, Mark Hefner, Irfan Ali, William Cherrick Schoonmaker, George Jarman | 2002-06-04 |
| 5774502 | Fully integrated data receiver and method for receiving on/off keyed AM/PDSK modulated signals | Donald K. Belcher, Alexander J. Nadler | 1998-06-30 |
| 5765112 | Low cost wide area network for data communication using outbound message specifying inbound message time and frequency | Brendan T. Fitzgerald, Andrew T. Powshok, Donald K. Belcher, Jeffrey R. White, Rodney D. Nelson | 1998-06-09 |
| 5734963 | Remote initiated messaging apparatus and method in a two way wireless data communications network | Brendan T. Fitzgerald, Andrew T. Powshok, Donald K. Belcher, Jeffrey R. White, Rodney D. Nelson | 1998-03-31 |
| 5640442 | Technique for determining propagating and clear frequency to be used in wide area wireless data communications network | Brendan T. Fitzgerald, Andrew T. Powshok, Donald K. Belcher, Jeffrey R. White, Rodney D. Nelson | 1997-06-17 |
| 5627526 | Proximity detection using DPSK waveform | Donald K. Belcher, Lamar McBryde | 1997-05-06 |
| 4259740 | Sequential detection system | James Leroy Snell, Raymond F. Cobb | 1981-03-31 |