Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6661880 | System and method for embedding digital information in a dial tone signal | Spiro Poulis, Matt Smith, Ned D. Plasson | 2003-12-09 |
| 6055245 | Apparatus and method for digitally conveying alert tones between an analog modem and an | Eric P. Mitchell, Connie D. York, Richard A. Kunz, David M. Arnesen, Gerald Wilson | 2000-04-25 |