Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D871502 | Sleeve with cushion spring for mechanical pencil | Hidehei Kageyama | 2019-12-31 |
| 10343446 | Writing instrument | Yoshio Noguchi, Hidehei Kageyama | 2019-07-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D871502 | Sleeve with cushion spring for mechanical pencil | Hidehei Kageyama | 2019-12-31 |
| 10343446 | Writing instrument | Yoshio Noguchi, Hidehei Kageyama | 2019-07-09 |