Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870281 | Gas-filled X-ray detector | Johannes Van Der Borst, Frans G. Vreugdenhil | 1989-09-26 |
LV
Lourens Valkonet
Overall (1989): #82,886 of 140,708Top 60%
1
Patents 1989