Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4821238 | Semiconductor memory device having test pattern generating circuit | — | 1989-04-11 |
| 4802127 | Output buffer circuit for a semiconductor memory device | Takao Akaogi | 1989-01-31 |