Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9039541 | Method for laying a playable surface, for instance a playing field, and surface thus formed | Hugo De Vries | 2015-05-26 |
| 8133123 | Method for laying a passable surface, for instance a playing ground, and surface thus formed | Hugo De Vries | 2012-03-13 |