Issued Patents All Time
Showing 51–52 of 52 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4253102 | Optical recording apparatus | Susumu Saito | 1981-02-24 |
| 4235507 | Optical system to condense light from a semiconductor laser into a circular spot | Seiji Yonezawa | 1980-11-25 |