Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8295458 | Systems and methods for monitoring “pay-as-you-go” telecommunication services | David Steinberg | 2012-10-23 |
| 8068810 | Systems and methods for monitoring “pay-as-you-go” telecommunication services | David Steinberg | 2011-11-29 |
| 7013127 | Systems and methods for employing “pay-as-you-go” telecommunication services | David Steinberg | 2006-03-14 |