Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9132542 | Power tool | James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin | 2015-09-15 |
| 8294328 | Brush gear of a motor | James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin | 2012-10-23 |
| 8049391 | Electric motor | James Ching Sik Lau, Duncan Yiu Lung Wong, Chang Lin Jin | 2011-11-01 |