Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6714921 | System for controlling the distribution and use of digital works using digital tickets | Peter L. T. Pirolli | 2004-03-30 |
| 6708157 | System for controlling the distribution and use of digital works using digital tickets | Peter L. T. Pirolli | 2004-03-16 |