Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4366346 | Artificial reverberation apparatus | Eise C. Dijkmans, Nico V. Franssen, deceased | 1982-12-28 |
| 4361727 | Sound reproducing arrangement for artificial reverberation | Nico V. Franssen, deceased | 1982-11-30 |
| 4352954 | Artificial reverberation apparatus for audio frequency signals | Nico V. Franssen, deceased | 1982-10-05 |