Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 4396960 | Servo track following control for magnetic heads, and method for compensating uniform disturbance variables | Volker Zimmermann | 1983-08-02 | $14,151,000 |
| 4278357 | Apparatus for controlling impression in a daisy wheel printer | Horst D. Matthaei | 1981-07-14 | $10,409,000 |
| 4217612 | Servo system for track accessing and track following in a disk drive | Volker Zimmermann | 1980-08-12 | $32,033,000 |
| 4208685 | Disk storage apparatus having an electrically tuned head-carriage actuator | Horst D. Matthaei, Volker Zimmermann | 1980-06-17 | $17,532,000 |