Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4816950 | Magnetic structure for suppressing magnetic cross talk among rotary transducers on a common rotary disc | Richard Heinz, Willi Hartmann, Josef Walter | 1989-03-28 |
HW
Hartmut Willmann
Overall (1989): #107,402 of 140,708Top 80%
1
Patents 1989