Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861620 | Method of laser marking | Masaaki Sakaki | 1989-08-29 |
| 4849178 | Apparatus for measuring ozone concentration | — | 1989-07-18 |
KA
Kenkoku Azuma
Overall (1989): #22,588 of 140,708Top 20%
2
Patents 1989