Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8888552 | Twistable and connectable block | Darryl J. Wizenberg, Yiu Fai Yeung, Ying Fai Lai, Pui Kwan Woo, Chun Kit Tong | 2014-11-18 |
| D702774 | Twistable and connectable block | Darryl J. Wizenberg, Yiu Fai Yeung, Ying Fai Lai, Pui Kwan Woo, Chun Kit Tong | 2014-04-15 |