Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7440552 | Fault detection method and apparatus for telephone lines | Paul Birdsall, Michael W Beckford, Andrew D Chattel | 2008-10-21 |
| 7418083 | Telecommunications line parameter estimation | Andrew D Chattell, Hilary P Logan | 2008-08-26 |
| 7359330 | Fault location on a telecommunications network | Hilary P Logan, Andrew D Chattell | 2008-04-15 |
| 6950497 | Fault location in a telecommunications network | Ian R Drury, Charles D O'Connor, Andrew D Chattell, Hilary P Logan, Neil A Thorpe +1 more | 2005-09-27 |