Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860293 | Supervision circuit for a non-encoded binary bit stream | Ludovicus H. M. Engel | 1989-08-22 |
| 4811087 | Clamping circuit for a television transmission system | Ludovicus H. M. Engel, Geert Winters | 1989-03-07 |