Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865433 | Zoom lens incorporating diaphragm | Kazuya Matsuda | 1989-09-12 |
| 4805991 | Multi-layer resin molded article and method of making the same | Takashi Arai, Katsuo Kawano | 1989-02-21 |