Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972361 | Woodwind instrument equipped with pad sealing mechanism automatically adjustable to tone hole | Jun Shibamiya, Ichi Sugawara, Keisuke Tanaka | 2005-12-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972361 | Woodwind instrument equipped with pad sealing mechanism automatically adjustable to tone hole | Jun Shibamiya, Ichi Sugawara, Keisuke Tanaka | 2005-12-06 |