Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10530785 | Method and system for message delivery security validation | David C. Mussman, Bruce Andersen | 2020-01-07 |
| 9935966 | Method and system for message delivery security validation | David C. Mussman, Bruce Andersen | 2018-04-03 |
| 9621564 | Method and system for message delivery security validation | David C. Mussman, Bruce Andersen | 2017-04-11 |
| 9178858 | Method and system for message delivery security validation | David C. Mussman, Bruce Andersen | 2015-11-03 |
| 7177397 | Geographic routing of emergency service call center emergency calls | Patti L. McCalmont, Robert Allen Sherry, Peter Schmidt | 2007-02-13 |
| 6771742 | Geographic routing of emergency service call center emergency calls | Patti L. McCalmont, Robert Allen Sherry, Peter Schmidt | 2004-08-03 |