Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5638430 | Call validation system | Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Michael R. Tangeman, Eric Busch | 1997-06-10 |
| 5619554 | Distributed voice system and method | Steven J. Hogan, Kristi T. Feltz, Douglas R. Murdock, Roy Allen Rhodes | 1997-04-08 |