Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5764275 | Interactive television security through transaction time stamping | John P. Lappington, Susan K. Marshall, Cameron A. Wilson, Eric C. Berkobin, Richard S. Simons | 1998-06-09 |
| 5734413 | Transaction based interactive television system | John P. Lappington, Susan K. Marshall, Cameron A. Wilson | 1998-03-31 |
| 5638113 | Transaction based interactive television system | John P. Lappington, Susan K. Marshall, Cameron A. Wilson | 1997-06-10 |
| 5519433 | Interactive television security through transaction time stamping | John P. Lappington, Susan K. Marshall, Cameron A. Wilson, Eric C. Berkobin, Richard S. Simons | 1996-05-21 |