Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7304958 | Method and apparatus for analyzing events in a telecommunications system | Derek J. Nelson, Paul R. Hartmann | 2007-12-04 |
| 6421323 | Method and apparatus for analyzing events in a telecommunications system | Derek J. Nelson, Paul R. Hartmann | 2002-07-16 |
| 5500853 | Relative synchronization system for a telephone network | Thomas L. Engdahl, Paul R. Hartmann | 1996-03-19 |
| 5495470 | Alarm correlation system for a telephone network | Paul R. Hartmann | 1996-02-27 |