Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4848885 | Preobjective scanning system | — | 1989-07-18 |
| 4843494 | Data storage apparatus using optical servo tracks | David Cronin, John M. Guerra, Paul F. Sullivan, Patricia A. Mokry, Vincent L. Cocco | 1989-06-27 |