Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4855857 | Magnetic disc cartridge with spindle abutment plate | Kunihira Seto | 1989-08-08 |
| 4811128 | Digital signal recording and reproducing apparatus having rotary magnetic heads | Yasuhiro Yamada, Kazuo Hikawa, Atsushi Hayami, Yasuo Inoue, Fumiaki Ono | 1989-03-07 |