Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889222 | Balustrade structure for curved escalator | — | 1989-12-26 |
OK
Osamu Kanamori
Overall (1989): #71,946 of 140,708Top 55%
1
Patents 1989