Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4334233 | Optical recording element and its manufacturing method | — | 1982-06-08 |
| 4330205 | Optical apparatus for measuring the size and location of optical in an article | Kiyoshi Yamada, Masana Minami | 1982-05-18 |