Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817802 | Writing instrument | Akira Matsuda, Masatoshi Yashima | 2004-11-16 |
| 6807704 | Brush flatter and drawing instrument equipped with brush flatter | — | 2004-10-26 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817802 | Writing instrument | Akira Matsuda, Masatoshi Yashima | 2004-11-16 |
| 6807704 | Brush flatter and drawing instrument equipped with brush flatter | — | 2004-10-26 |