Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4989233 | Systems for capturing telephonic mass responses | Harvey E. Schakowsky | 1991-01-29 |
| 4989234 | Systems for capturing telephonic mass responses | Harvey E. Schakowsky | 1991-01-29 |