Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830521 | Electronic typewriter with a spelling check function and proper noun recognition | Toshiyuki Sakai, Ryoichi Sasaki | 1989-05-16 |
| 4818130 | Character erasable printing apparatus including selective erasing of variable length underline | Yuichi Harada | 1989-04-04 |