Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6463139 | Combination pre-paid and calling card | Michael Davitt, Louis N. Delery | 2002-10-08 |
| 6137872 | Combination pre-paid and calling card | Michael Davitt, Louis N. Delery | 2000-10-24 |
| 5946380 | Communications system and method with call expenditure control | Steve L. Cohen, Michael Davitt, Alan B. Moshinsky, Kathleen T. Quinn, Usha Rao | 1999-08-31 |