Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302680 | Handset telephone | Tsuyoshi Nakamachi, Shigeyuki Yoshida | 1989-08-08 |
| D302274 | Portable telephone or similar article | Tsuyoshi Nakamachi, Yoshihiro Tsujita | 1989-07-18 |
| 4841573 | Stereophonic signal processing circuit | — | 1989-06-20 |
| D301034 | Handset telephone | Tsuyoshi Nakamachi, Atusi Musya | 1989-05-09 |
| 4815056 | Automatic disk handling device with overturn plate | Hiroshi Toi, Makoto Uragaki | 1989-03-21 |