Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5619387 | Disk storage device with spiral data track and incremental error offsets in angularly spaced imbedded concentric servo patterns | Hal Hjalmar Ottesen, Earl A. Cunningham, Dana H. Brown | 1997-04-08 |
| 5615064 | Pulsed current velocity controlled head load method and apparatus which uses the back EMF to control the generation of head actuator driving pulses | Timothy J. Blank, Kevin J. Erickson, John C. Purkett | 1997-03-25 |
| 5596460 | System and method for encoding a servo address | John C. Purkett | 1997-01-21 |