Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352561 | Calibrating apparatus in a monochromator | Shigeo Tohyama, Isao Nemoto | 1982-10-05 |
| 4323309 | Spectro-photometer with arithmetic and control unit | Shigeo Tohyama | 1982-04-06 |