Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011578 | System for collecting audience response data | Eric Louis Zager, David Castler | 2000-01-04 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6011578 | System for collecting audience response data | Eric Louis Zager, David Castler | 2000-01-04 |