Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6071479 | Air filtration device | Johannes Marra, Wilhelmus H. M. Bruggink | 2000-06-06 |
| 5507108 | Steam iron with scale prevention | Wilhelmus H. M. Bruggink, Johannes Marra, Oene Van Der Wal | 1996-04-16 |