Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4866284 | Irradiation device | Johannes A. Frankena, Marten F. Elkerbout | 1989-09-12 |
| 4839513 | Ultraviolet irradiation device | — | 1989-06-13 |
JW
Jorrit Wijtsma
Overall (1989): #23,319 of 140,708Top 20%
2
Patents 1989