Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7771168 | Axial fan | Henricus Johannes Bernardus Olthof, Giorgio Cipelletti | 2010-08-10 |
| 5683636 | Method of fan blade manufacture | Henricus Johannes Bernardus Olthof | 1997-11-04 |