Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869410 | Magnetic tape container | Kouichi Sota, Toshiaki Sima | 1989-09-26 |
| 4806503 | Method for the replacement of semiconductor devices | Hiroshi Nakatani, Keiji Yamamura | 1989-02-21 |