Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855975 | Over write capable magnetooptical recording method using two beams, and magnetooptical recording apparatus therefor | Masatoshi Sato | 1989-08-08 |
| 4853912 | Process and apparatus for simultaneous erasure and recording in magneto-optical recording | Masatoshi Sato | 1989-08-01 |