Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5815565 | Service evaluation system and method for a telephonic switch | Wayne L. Harbuziuk, David L. Blaha | 1998-09-29 |
| 5696818 | Delay announcement group and time controller for a telephone system | David L. Blaha | 1997-12-09 |
| 5535270 | Automatic call distributor having multiple audio sources | David L. Blaha | 1996-07-09 |