Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840473 | Optical device | Nobuo Kushibiki, Noriyuki Nose, Takeshi Baba, Masakazu Matsugu, Yukichi Niwa | 1989-06-20 |
| 4802746 | Variable-focus optical element and focus detecting device utilizing the same | Takeshi Baba, Shigeyuki Suda, Noriyuki Nose, Eigo Kawakami, Nobuo Kushibiki | 1989-02-07 |