Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814731 | Superconducting dipole electromagnets and process for producing the same | Nobuhiro Shibuta | 1989-03-21 |
| 4805164 | Disc inclination detecting apparatus | Hirohisa Yamaguchi | 1989-02-14 |
| 4797870 | Optical recording and reproducing apparatus | Tadao Nagai | 1989-01-10 |