Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840471 | X-ray shielded projection lens | Hideki Ishinaga | 1989-06-20 |
KM
Katsuaki Mitani
Overall (1989): #90,274 of 140,708Top 65%
1
Patents 1989