Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5577116 | Apparatus and method for echo characterization of a communication channel | Keith Townsend, Harish Punjabi, Alexandra Duel-Hallen | 1996-11-19 |
| 4677668 | Echo canceller using parametric methods | Sasan Ardalan | 1987-06-30 |
| 4369657 | Gravimeter | — | 1983-01-25 |