Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297114 | Magneto-optic recording/reproduction apparatus for minimizing variation in focusing error signals caused by variation in optical source wavelength | Tsuyoshi Itoh, Isao Okuda, Toshiyuki Kase, Hiroshi Nishikawa, Masahiro Oono +3 more | 1994-03-22 |