Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4797935 | Speaker system with independently supported top plate | — | 1989-01-10 |
FT
Fujio Tanaka
Overall (1989): #113,495 of 140,708Top 85%
1
Patents 1989