Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11091953 | Revolving door | Gertjan Otto, Gijsbert Henk Bakker | 2021-08-17 |
| 10837225 | Revolving door | Hendrik Lammes, Gertjan Otto | 2020-11-17 |
| 10612286 | Revolving door | Hendrik Lammes, Gertjan Otto | 2020-04-07 |