Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303025 | Portable vacuum cleaner | Sachio Yamamoto, Mika Nakajima | 1989-08-22 |
| D302876 | Vacuum cleaner | Matafumi Ikeda, Mika Nakajima | 1989-08-15 |
| D301646 | Vacuum cleaner | Sachio Yamamoto | 1989-06-13 |
| D301649 | Vacuum cleaner | Sachio Yamamoto | 1989-06-13 |
| D300379 | Vacuum cleaner | Sachio Yamamoto | 1989-03-21 |