Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8005195 | Telephone network messaging | Ray F. Chadwick | 2011-08-23 |
| 7602890 | Telephone network messaging | Ray F. Chadwick | 2009-10-13 |
| 7418087 | Telephone network messaging | Ray F. Chadwick | 2008-08-26 |
| 7206572 | Calling party announcement apparatus | — | 2007-04-17 |
| 7194077 | System and method for acquiring information relating to geographic location | Ray F. Chadwick | 2007-03-20 |
| 7099439 | Loop test apparatus and method | — | 2006-08-29 |
| 6970695 | Calling party announcement apparatus | — | 2005-11-29 |
| 6038443 | Calling party announcement apparatus | — | 2000-03-14 |
| 5526406 | Calling party announcement apparatus | — | 1996-06-11 |
| 5426634 | Flexible call-processing apparatus for | Michael E. Cote, Paul Schechinger | 1995-06-20 |