Issued Patents All Time
Showing 126–129 of 129 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6339640 | Method and apparatus for automatic callback in a telecommunication system | Julie Chen | 2002-01-15 |
| 6118777 | System and method for providing competing local exchange carriers unbundled access to subscriber access lines | — | 2000-09-12 |
| 4972160 | Phase-lock loop circuit with improved output signal jitter performance | — | 1990-11-20 |
| 4782525 | Echo cancellation in two-wire transmission path repeaters | Douglas James Millar, Gilles Dupuis | 1988-11-01 |