Issued Patents 2003
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6642443 | Woodwind instrument with key mechanism perfectly closing holes | Shigeru Okada | 2003-11-04 |
JS
Jun Shibamiya
Overall (2003): #186,877 of 273,478Top 70%
1
Patents 2003