Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6940969 | Capacitor cancellation method and apparatus | Robert Chen, Dewayne A. Spires | 2005-09-06 |
| 6925178 | Returning ringing signals through the tip amplifier of subscriber-line interface circuitry | David Paul Chabinec, Dean M. Umberger | 2005-08-02 |
| 6842518 | Frequency-dependent impedance synthesis for DSL interface circuits | Robert Chen, Dewayne A. Spires | 2005-01-11 |