Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9555661 | Electric pencil sharpener with a replaceable cutter assembly | Chien-Hsing Chang, Liang-Liang Yao | 2017-01-31 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9555661 | Electric pencil sharpener with a replaceable cutter assembly | Chien-Hsing Chang, Liang-Liang Yao | 2017-01-31 |