Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864649 | Driver circuit for driving a light emitting element by superimposing an analog sub-information signal over a digital main signal | Toru Hamanaka | 1989-09-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864649 | Driver circuit for driving a light emitting element by superimposing an analog sub-information signal over a digital main signal | Toru Hamanaka | 1989-09-05 |