Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4493101 | Anti-howl back device | Shigetaro Muraoka | 1985-01-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4493101 | Anti-howl back device | Shigetaro Muraoka | 1985-01-08 |