Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6609846 | Retractable writing instrument | Shun Sang Poon | 2003-08-26 |
| 6491465 | Writing implement with a displaceable refill | — | 2002-12-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6609846 | Retractable writing instrument | Shun Sang Poon | 2003-08-26 |
| 6491465 | Writing implement with a displaceable refill | — | 2002-12-10 |