Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6217338 | Braille cell and display comprising a plurality of braille cells, as well as a method for controlling a plurality of pins of a braille cell | — | 2001-04-17 |
| 5426837 | Method of adjusting a piezo-electric bending element | — | 1995-06-27 |
| 4758165 | Tactile relief display device and method for manufacture it | Kees Zeehuisen | 1988-07-19 |