Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5627827 | Automatic service cutover for | Allan Dale | 1997-05-06 |
| 5621731 | Private exchange for | Allan Dale, Thomas Bayerl, Brian P. Dick, Scott W. B. English, John C. Dougherty | 1997-04-15 |