Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857742 | Position detecting device using variable radiation | Yasuo Kawai | 1989-08-15 |
YK
Yuzo Kato
Overall (1989): #39,669 of 140,708Top 30%
1
Patents 1989