Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12151503 | Mechanical pencil | Ligeng Guo | 2024-11-26 |
| D559908 | Mechanical pencil | — | 2008-01-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12151503 | Mechanical pencil | Ligeng Guo | 2024-11-26 |
| D559908 | Mechanical pencil | — | 2008-01-15 |