Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847558 | Non-destructive method and apparatus using DC erase field for magnetic measurement of recording disc | Jason L. Pressesky | 1989-07-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847558 | Non-destructive method and apparatus using DC erase field for magnetic measurement of recording disc | Jason L. Pressesky | 1989-07-11 |