Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872161 | Bus circuit for eliminating undesired voltage amplitude | — | 1989-10-03 |
| 4820974 | Method for measuring a characteristic of semiconductor memory device | Joji Katsura, Seiji Yamaguchi, Kazuhiko Tsuji | 1989-04-11 |