Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4809111 | Magnetic head for use in vertical recording | — | 1989-02-28 |
VZ
Victor Zieren
Overall (1989): #46,332 of 140,708Top 35%
1
Patents 1989