Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836636 | Optical switch and optical keyboard utilizing the same | Yuichi Obara, Kenichi Fuse, Takao Toya, Kazuo Chiba | 1989-06-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836636 | Optical switch and optical keyboard utilizing the same | Yuichi Obara, Kenichi Fuse, Takao Toya, Kazuo Chiba | 1989-06-06 |