Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6009321 | System and method for call tracing | Jin Wang, Maria Hemmer, Yahya Idrissi | 1999-12-28 |
| 4308554 | Television viewer reaction determining system | Roger D. Percy, Sholly Kagan | 1981-12-29 |