Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4834843 | Method of marking disc-shaped information carriers | Hermann Koop | 1989-05-30 |
HS
Hans Schuddekopf
Overall (1989): #107,733 of 140,708Top 80%
1
Patents 1989