Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857954 | Image forming apparatus | Yasuo Abuyama, Osamu Hamanaka, Takeshi Sanbayashi | 1989-08-15 |
| 4835572 | Image forming apparatus enabling reversible selection of a default mode of operation | — | 1989-05-30 |
| 4814823 | Image forming apparatus | Yasuo Abuyama, Osamu Hamanaka, Takeshi Sanbayashi | 1989-03-21 |