Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7239644 | ATM gateway system | Joseph Michael Christie, Joseph Christie, Albert Daniel DuRee, Michael Joseph Gardner, Tracy Lee Nelson +1 more | 2007-07-03 |
| 6999463 | Number portability in a communications system | Joseph Michael Christie, Joseph Christie, Michael Joseph Gardner, Albert Daniel DuRee, William L. Wiley +1 more | 2006-02-14 |
| 5920562 | Systems and methods for providing enhanced services for telecommunication call | Joseph Michael Christie, Joseph Christie, Tracy Lee Nelson | 1999-07-06 |