Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890066 | Envelope detector | Willibrordus G. M. M. Straver | 1989-12-26 |
| 4870383 | Oscillator circuit | — | 1989-09-26 |
| 4816779 | Amplitude stabilized oscillator having positive and negative feedback | Cornelis A. M. Boon | 1989-03-28 |