Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878869 | Toys having magnetic switches | Hideya Nishikawa | 1989-11-07 |
| 4842502 | Cotton candy machine | Mitsuyo Tsumita | 1989-06-27 |
| 4833665 | Information recording control system reusing a defective area | Kenji Tokumitsu, Takashi Doi, Michio Miyazaki, Nobuyoshi Izawa, Toru Takeda | 1989-05-23 |