Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857900 | Display device with color correction | — | 1989-08-15 |
| 4820918 | Optical encoder including transparent substrates having formed indicators therein | Masahiko Igaki, Tomohiro Maekawa | 1989-04-11 |