Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864434 | Method for writing a tri-phase servo pattern which provides information for positioning the transducers of a magnetic storage device | — | 1989-09-05 |
| 4811135 | Tri-phase servo pattern for providing information for positioning the transducers of a magnetic disk storage drive | — | 1989-03-07 |