Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817487 | Structure of fall board assembly of keyboard instrument | — | 1989-04-04 |
NY
Noboru Yamashita
Overall (1989): #72,250 of 140,708Top 55%
1
Patents 1989