Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680253 | Light beam scanning apparatus comprising a first and second diffraction grating plate | Shinya Hasegawa, Shigeo Kayashima, Satoshi Maeda, Fumio Yamagishi, Masato Nakashima +2 more | 1997-10-21 |