Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6071479 | Air filtration device | Johannes Marra, Theodorus L. G. M. Thijssen | 2000-06-06 |
| 5924414 | Deep-frying device | Michiel A. A. Schallig, Jan H. Benedictus | 1999-07-20 |
| 5507108 | Steam iron with scale prevention | Johannes Marra, Oene Van Der Wal, Theodorus L. G. M. Thijssen | 1996-04-16 |