Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4625326 | Apparatus for generating a pseudo-stereo signal | Wilhelmus Johannes Wilhelmina Kitzen | 1986-11-25 |
| 4375623 | Arrangement for the transmission of audio signals | Nico V. Franssen, deceased, by Friedrich J. de Haan, administrator, Kornelis A. Immink, Eise C. Dijkmans | 1983-03-01 |
| 4221928 | Noise reduction circuit for stereo signals | Nico V. Franssen, deceased | 1980-09-09 |