Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4865418 | Crystalline optical fiber and its method of manufacture | Kenichi Takahashi | 1989-09-12 |
| 4832444 | Method and apparatus for transmitting light | Kenichi Takahashi | 1989-05-23 |
| 4828354 | Infrared fiber | — | 1989-05-09 |
| 4811673 | Information display for a zigzag sewing machine | — | 1989-03-14 |