Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5142416 | Reflection-type photoelectric switch, fresnel lens and method of manufacturing said lens | Arata Nakamura, Fumihiko Misumi, Satoru Shimokawa, Shinya Tamino | 1992-08-25 |