Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828895 | Magnetic recording medium for test purposes, in particular for calibrating flying heads | Waltraud Bickert, Istvan Gergely, Wolfgang Oetzel | 1989-05-09 |
HB
Heide Brunkhorst
Overall (1989): #136,008 of 140,708Top 100%
1
Patents 1989