Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826424 | Lens barrel made by injection molding | Takashi Arai | 1989-05-02 |
| 4805991 | Multi-layer resin molded article and method of making the same | Takashi Arai, Hidekazu Okajima | 1989-02-21 |