Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860138 | Differentially sensitive single track read/write head design with improved biasing | Earl A. Cunningham | 1989-08-22 |
| 4816947 | Single track vertical and horizontal recording read/write head design | David A. Thompson | 1989-03-28 |
| 4799115 | Method and apparatus for tolerating track misregistration systems in twin track vertical recording systems | Lee S. Rogers | 1989-01-17 |