Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10738954 | Method and device providing cinematographic light effects in a laminar or low-turbulent liquid flow jet | Laurens René Antonius Kessener, Herman Paulus Maria Kessener | 2020-08-11 |
| 4901922 | Method and apparatus for creating a spectacular display | Herman Paulus Maria Kessener | 1990-02-20 |