Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680789 | Audio transmission circuit comprising a transmit amplifier in the form of a line voltage stabilizer | Peter J. M. Sijbers, Petrie Johan van der Plaats | 1987-07-14 |
| 4585909 | Transmission circuit for a DTMF-telephone set | Frederik Van Dongen, Josephus Joannes Antonius Geboers | 1986-04-29 |