Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870484 | Color display device using light shutter and color filters | — | 1989-09-26 |
| 4850685 | Projection-type color display device | Hiroshi Kamakura, Takeshi Ono, Junichi Nakamura, Akitaka Yajima | 1989-07-25 |