Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6990349 | System and method for reconnecting a mobile station to an emergency operator | — | 2006-01-24 |
| 6009321 | System and method for call tracing | Jin Wang, Maria Hemmer, David C. M. Wilding | 1999-12-28 |