Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5689746 | Amount-of-light adjusting device | Hiroshi Akada, Tatsuo Chigira, Masahiko Tsuzuki | 1997-11-18 |
| 5665918 | Linear vibration actuator utilizing combined bending and longitudinal vibration modes | Masami Sugimori | 1997-09-09 |