Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10081948 | Combination of elements to construct a threshold ramp construction, ramp construction, and method to construct a threshold ramp construction | Roy Gilsing, Maarten Hendrik Wijninga | 2018-09-25 |
| 5822924 | Burglary-preventative profile set and a profiled strip for application therein | Maarten Hendrik Wijninga, Nicole Therese Hartwijk | 1998-10-20 |