Issued Patents 2003
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661880 | System and method for embedding digital information in a dial tone signal | Matt Smith, Ned D. Plasson, Jeffrey A. Hanline | 2003-12-09 |
| 6654461 | Synthesized telephone line ring signal impedance termination | John Evans | 2003-11-25 |
| 6573729 | Systems and methods for impedance synthesis | John Evans, Shayne Messerly | 2003-06-03 |
| 6567472 | System and method for terminating a line by reflecting a scaled impedance | John Evans | 2003-05-20 |