Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7224793 | Communication set with detection of set function and line condition | Franciscus J. M. Thus, Laurens Cornelis Van Leeuwen | 2007-05-29 |
| 5075637 | Control circuit for amplified listening | Philippe Jouen | 1991-12-24 |
| 4811391 | Telephone set comprising a line voltage stabilizer having a DC supply point | Frederik Van Dongen | 1989-03-07 |
| 4680789 | Audio transmission circuit comprising a transmit amplifier in the form of a line voltage stabilizer | Henricus J. M. Otten, Petrie Johan van der Plaats | 1987-07-14 |
| 4649235 | Telephone circuit with a class-B amplifier output stage | — | 1987-03-10 |
| 4567426 | Current stabilizer with starting circuit | Rudy J. van de Plassche | 1986-01-28 |