Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835702 | Method of sorting goods and system therefor | — | 1989-05-30 |
| 4821249 | Timepiece movement | Susumu Ikuma | 1989-04-11 |
| 4821257 | Electricity supply structure for a piezoelectric vibrator | Takumi Matsuda | 1989-04-11 |