Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839753 | Information recording disk | Jun Ide, Tomoo Iizumi, Yoshitaka Takahashi, Hiroshi Yoshida, Tooru Kaneko | 1989-06-13 |
| 4835642 | Magnetic head assembly for double-sided disk drive apparatus | Masatoshi Furukawa, Masao Kumagai, Tadami Sugawara, Hatsuo Sasaki, Atsushi Takahashi | 1989-05-30 |