Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517271 | Double-chuck mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2003-02-11 |
| 6517272 | Double-chuck mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2003-02-11 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6517271 | Double-chuck mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2003-02-11 |
| 6517272 | Double-chuck mechanical pencil | Hidehei Kageyama, Yoshihide Mitsuya | 2003-02-11 |