Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864253 | Phase locked loop wherein phase comparing and filtering are performed by microprocessor | — | 1989-09-05 |
| 4835481 | Circuit arrangement for generating a clock signal which is synchronous in respect of frequency to a reference frequency | Friedrich Geissler, Juergen Heitmann | 1989-05-30 |