Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696818 | Delay announcement group and time controller for a telephone system | David L. Blaha | 1997-12-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696818 | Delay announcement group and time controller for a telephone system | David L. Blaha | 1997-12-09 |