Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4876657 | Presentation display apparatus for displaying two different images on separate displays for a listener and a speaker | Mitsuo Saito, Toshio Okamoto | 1989-10-24 |
| 4818978 | Position and image inputting unit | Motoshi Kurihara | 1989-04-04 |