Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890120 | Thermal transfer type printing device capable of selecting ink sheets | Takashi Mori, Tetsuo Watanabe | 1989-12-26 |
| 4873535 | Method of driving thermal head | — | 1989-10-10 |
| 4816843 | Method of controlling a thermal head | — | 1989-03-28 |