Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6188753 | Method and apparatus for detection and prevention of calling card fraud | Hooshmand Afsar, David Scott Janzen, Mark Ross Erickson, Christine Louise Fogarty, Michael Scott Nielsen +1 more | 2001-02-13 |