Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4829175 | Light beam scanning apparatus, method of correcting unevenness in scanning lines in light beam scanning apparatus, method of detecting deflection of rotational axis of light beam deflector and rotational axis deflection detecting device | Chiaki Goto | 1989-05-09 |