Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702193 | Side knock type mechanical pencil | Hidehei Kageyama, Tomiji Ueki | 1997-12-30 |
| 5700101 | Writing tool | Shuhei Kageyama, Toshihiko Kageyama, Youichi Nakazato | 1997-12-23 |
| 5683191 | Writing tool | Shuhei Kageyama, Toshihiko Kageyama, Youichi Nakazato | 1997-11-04 |
| 5662425 | Stick-shaped material propelling container | — | 1997-09-02 |