Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4819221 | Apparatus for reading record carriers having substantially concentric or spiral tracks | Hilde M. A. Overath, Cornelius Antonius Hezemans | 1989-04-04 |
JB
Johannes Leopoldus Bakx
Overall (1989): #96,696 of 140,708Top 70%
1
Patents 1989