Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4907216 | Optical record carrier having position indentifying track modulation | — | 1990-03-06 |
| 4845758 | Equalizer with adjustable band filters and a digital filter suitable for use in the equalizer | Franciscus J. Op de Beek, Jacob M. Van Nieuwland, Johannes W. Kemna | 1989-07-04 |
| 4736163 | Circuit for detecting and suppressing pulse-shaped interferences | Petrus J. Berkhout | 1988-04-05 |