Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860230 | Signal recognition system | Michel C. A. R. Rahier | 1989-08-22 |
| 4803648 | Echo canceller using an adaptive finite impulse response filter | Rudolf F. I. Dierckx, Pierre Paul Guebels | 1989-02-07 |