Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D273049 | Combination door lock de-icer and torch and key ring | Siu Ling Lam, Yuk-Ying Wong Chan | 1984-03-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D273049 | Combination door lock de-icer and torch and key ring | Siu Ling Lam, Yuk-Ying Wong Chan | 1984-03-13 |