Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6683946 | Local exchange carrier escape list for local number portability | Kasiviswanathan Rangarajan | 2004-01-27 |
| 6208723 | System and method for enhanced automatic recall | — | 2001-03-27 |
| 4471994 | Adjustable chair | Karl Zund | 1984-09-18 |