Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872074 | Data transducer position control system for rotating disk data storage equipment | Donald V. Daniels, Joel N. Harrison | 1989-10-03 |
| 4814909 | Data transducer position control system for rotating disk data storage equipment | Donald V. Daniels, Joel N. Harrison | 1989-03-21 |